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Projectile motion
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A ball is tied to one end of a string. The other end of the string is held fixed. The ball is set moving around a vertical circle without friction, and with speed v_i = sqrt{Rg}. At what angle from the bottom should the string be cut so that the ball wil
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When a water gun is fired while being held horizontally at a height of 1.00 mt. above ground level, the water travels a horizontal distance of 5.00 m. A child, who is holding the same gun in a horizontal position, is also sliding down a 45.0 degree inclin
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In the below given figure, balloon A is ascending at the rate vA = 12 km/h and is being carried horizontally by the wind at vw =20 km/h. If a ballast bag is dropped from the balloon at the instant h=
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Projectile motion
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A laundry chute sends clothes into a basket that is 0.400 m away from the chute opening and 0.600 m below the chute opening. If the clothes go in the basket, what must their velocity (m/s) be when they leave the laundry chute?
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A circus has been trained to leap off a 12-m high platform and land on a pillow. The cat leaps off at Vo= 4.0 m/s and an angle 43^o(see figure below) .(a).Where should the trainer place the pillow so
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An airplane flying at a speed of 800 km/h 2 km above the ground, releases a bomb. How much km ahead of the plane, the bomb will hit the ground? Ignore air resistance.
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Projectile motion
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You drop a stone from a position of rest. The acceleration of gravity is 9.8 m/s?. How far will it fall vertically in the first 7 s? Answer in units of m. If you instead toss it horizontally at 4.6 m/s, how far will it fall vertically in the first 7
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Projectile motion
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We have neglected air resistance for the heavy steel ball. How does air resistance affect the motion of long range projectiles? Which component (vertical or horizontal) of the velocity is most affected by air resistance?
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Projectile motion
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A regulation volleyball court is L = 18.0 m long and a regulation volleyball net is d = 2.43 m high. A volleyball player strikes the ball a height h = 1.76 m directly above the back line, and the ball’s initial velocity makes an angle q = 55 with respect
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Projectile motion
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A golfer, standing on a fairway, hits a shot to a green that is elevated 5.80 m above the point where she is standing. If the ball leaves her club with a velocity of 44.5 m/s at an angle of 33.0^{cir
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Water is leaving a hose at 6.8 m/s. If the target is 2 m away horizontally, what angle should the water have initially?
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Projectile motion
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An airplane is flying with a velocity of 90.0 m/s at an angle of 23.0 deg above the horizontal. When the plane is 114 m directly above a dog that is standing on level ground, a suitcase drops out of t
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Projectile motion
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A ball is to be kicked so that, at the highest point of its path, it just clears a horizontal cross-bar on a pair of goalposts. The ground is level and the cross-bar is 2.5m high. The ball is kicked f
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Projectile motion
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If the launching and landing heights for a projectile are equal, what angle produces the greatest range? Explain your answer.
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A small steel ball bearing, with a mass of 28.0g, is on a short, compressed spring. When aimed vertically, and suddenly released, the spring sends the bearing to a height of 1.25m. Calculate the horiz
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Projectile motion
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What is Knudsen number for molecular flow and viscous flow?
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Projectile motion
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A skateboarder shoots off a ramp with a velocity of 6.6 m/s directed at an angle of 58 degrees above the horizontal. The end of the ramp is 1.2 m above the ground. Let the x-axis be parallel to the ground, let the +y-direction be vertically upward, and ta
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Projectile motion
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A playground is on the flat roof of a city school, 6 m above the street below the figure. The vertical wall of the building is h = 7 m high, to form a 1m high railing around the playground. A ball has fallen to the street below, and a passerby returns it
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Projectile motion
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A student throws a water balloon with speed v0 from a height h = 1.56 m at an angle\theta = 22 degrees above the horizontal toward a target on the ground. The target is located at a horizontal distance d = 7.5 m from the student’s feet. Assume that the ba
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Projectile motion
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A projectile is fired with an initial speed of 220 m/s and angle of elevation 60 degrees. The projectile is fired from a position 120 m above the ground. (Recall g= 9.8 m/s^2. Round your answers to th
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During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 6.65s, how high does it rise? The acceleration of gravity is 9.8m/s^2. Answer in units of m.
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Projectile motion
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Dock diving is a great form of athletic competition for dogs of all shapes and sizes. Sheba, the American Pit Bull Terrier, runs and jumps off the dock with an initial speed of 8.62 m/s at an angle of
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Projectile motion
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A 40- lb suitcase slides from the rest 20 ft down the smooth ramp. Determine the point where it strikes the ground at ”C”. How long does it take to go from ”A” to ”C”?
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Projectile motion
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The right field wall at Yankee stadium is 96 m from the home plate. The outfield fence is 2.57 m high. When a home run is hit over the right field fence, what is the minimum initial speed of the ball
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Projectile motion
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When baseball outfielders throw the ball, they usually allow it to take one bounce, on the theory that the ball arrives at its target sooner that way. Suppose that, after the bounce, the ball rebounds
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Projectile motion
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Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s later. a) How high is the roof? b) How far from the edge of the roof do
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What is a hot dog cannon?
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Projectile motion
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A physics student wants to hit a target with a rubber band ball from 1.8 meters away. If he throws the ball at a speed of 6 m/s and the target is at the exact same height as where the ball is thrown, what angle from the horizontal must he throw the ball t
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Projectile motion
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During a do-it-yourself roof repair project, you are on the roof of your house and accidentally drop your hammer. The hammer then slides down the roof at a constant speed of 4.3 m/s. The roof makes an angle of 29 degrees with the horizontal, and its lowes
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Projectile motion
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William Tell must split the apple atop his son s head from a distance of 45.1 m. When William aims directly at the apple, the arrow is horizontal. At what angle must he aim it to hit the apple if the
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Projectile motion
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ronaldinho kicks a soccer ball with an initial velocity of 22.0 m/s at an angle of 13.0 . How far away does the ball land?
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Projectile motion
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At time T=O, ball 1 is released from rest at a height H above the floor. At the same time and from the same initial height H, another ball (ball 2) is launched horizntally with ititail speed Vo. It la
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Projectile motion
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A marble rolls off a lab table that is 0.92 m high. It rolls off the table with a velocity of 1.66 m/s. How far from the base of the table must a chip be placed so that the marble will hit the chip?
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Projectile motion
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How can you find the velocity of a bullet fired from a nerf gun the second it leaves the gun, if all you have is the angle it was shot at, and how far it traveled?
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Projectile motion
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A batter hits a pitched ball at a height 4.0 ft above the ground so that its angle of projection is 45 degrees and its horizontal range is 350 ft. The ball travels down the left-field line where a 24-
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Projectile motion
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A firefighting crew uses a water cannon that shoots water at 27.0 m/s at a fixed angle of 50.0 ^o above the horizontal. The firefighters want to direct the water at a blaze that is 12.0 m above ground level. How far from the building should they posit
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Projectile motion
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The left field wall at Fenway Park in Boston is popularly known as the “Green Monster” because it is 11.0 meters high. The wall is 95.0 meters from home plate. While watching a game there, you see a b
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Projectile motion
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The Swiss tennis player Roger Federer hits the ball at the point r(0) = left langle 0,0,3 right rangle. The initial velocity is r ‘(0) = left langle 100,10,13 right rangle. The tennis ball exp
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Projectile motion
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A popular game in Indian villages is goli which is played with small glass balls called golis. The goli of one player is situated at a distance of 2.0 m from the goli of the second player. This second player has to project his goli by keeping the thumb
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Projectile motion
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A person wants to launch a water balloon and hit the top of a tower, 50.0 meters away. The water balloon launcher is angled at 25 degrees. The water balloon leaves the launcher at 68 m/s. If the ballo
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