A projectile is launched with a launch angle of 45° with respect to the horizontal direction and with initial speed 77 m/s. How long does it remain in flight?

A snowball rolls off a barn roof that slopes downward at an angle of 40°. The edge of the roof is 14.0 m above the ground, and the snowball has a speed of 7.00 m/s as it rolls off the roof. Ignore air resistance, how far from the edge of the barn does the snowball strike the ground if it doesn't strike anything else while falling? If a man 1.9 m tall is standing 4.0m from the edge of the barn, will he be hit by the snowball?

A horizontal projectile is shot with an initial velocity of 21 m/s from a height of 6.3 m above the ground. Neglecting air-resistance, how long it will take to reach the landing point (time in the air measured in seconds)?

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of vo= 13.0 m/s. The cliff is h = 47.0 m above a flat, horizontal beach as shown in the figure. (a) What are the coordinates of the initial position of the stone? Xo = Yo= (b) What are the components of the initial velocity? Vox m/s m/s Voy Vx= (c) Write the equations for the x- and y-components of the velocity of the stone with time. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not include units in your answer.) = m m X= (d) Write the equations for the position of the stone with time, using the coordinates in the figure. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not state units in your answer.) y =

a boy fires an arrow from a height of 1.80 m at an angle of 15° above the horizontal towards a target standing 15.00 m in front of him. He misses the target completely, and the arrow goes flying past the target and hits the ground 21.1 m behind the target.   Determine the initial velocity of the arrow in m/s.

A golf ball was hit horizontally with a horizontal velocity of 40.0m/s from a height of 120m. How long does it take the ball to hit the ground?

Emanuel Zacchini, the famous human cannonball of the Ringling Bros. and Barnum & Bailey Circus, was fired out of a cannon with a speed of 24.0 m/s at an angle of 40.0° above the horizontal. If he landed in a net 56.6 m away at the same height from which he was fired, how long was Zacchini in the air?

A person stands on a diving board and tosses a stone into a swimming pool. The stone is thrown from a height of 2.9 m above the water surface with a velocity of 2.8 m/s at an angle of 38° above the horizontal. As the stone strikes the water surface, it immediately slows down to exactly half the speed it had when it struck the water and maintains that speed while in the water. After the stone enters the water, it moves in a straight line in the direction of the velocity it had when. it struck the water. If the pool is 4 m deep, how much time elapses between when the stone is thrown and when it strikes the bottom of the pool? ttotal = S

An inflatable life raft is released from an airplane at 300 m altitude, in level flight, with an air speed of 120 m/s in the horizontal direction. Neglecting air resistance, how long before the raft strikes the water?