A person on the top of a roof of a building (100 m) drops a ball. After 2s passed, a person who stands at the base of the same building throws a separate ball in the upward direction with a speed of 20 m/s. Assumes the two balls are traveling on the same vertical path. Will the two balls collide with each other? If so, what are their velocities as they collide with each other?

1. A physics book slides off a horizontal table top with a speed of 1.10 m/s. It strikes the floor in 0.350 s. Ignore air resistance. Find (a) the height of the table top above the floor; (b) the horizontal distance from the edge of the table to the point where the book strikes the floor; (c) the horizontal and vertical components of the book’s velocity, and the magnitude and direction of its velocity, just before the book reaches the floor. (d) Draw x-t, y-t, and graphs for the motion.

A projectile is thrown from the top of a cliff with an initial speed of 25 m/s at an angle of 600 up from the horizontal. If the projectile lands 100 m from the base of the cliff how tall is the cliff?

A ball is kicked at ground level with an initial velocity of 19 m/s in the horizontal direction and 12 m/s in the vertical direction. The ball hits the ground at a speed of 22.47 m/s and remains in the air for 2.4 seconds. What maximum height is attained by the ball in meters?

1b. A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v0 = 18.5 m/s. The cliff is h = 20.0 m above a flat, horizontal beach as shown in the figure. What are the components of the initial velocity? v0x =  ____m/s v0y =  ____m/s

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v 20.5 m/s. The cliff is h = 26.0 m above a flat, horizontal beach as shown in the figure. (a) What are the coordinates of the initial position of the stone? Xo = m Yo- m (b) What are the components of the initial velocity? m/s m/s Vox= Voy in seconds. Do not include units in your

A boy stands 10 meters from a school building, tosses a ball toward the building with an angle of 30 degrees above the horizontal. What height does the ball strike the building with if the initial speed is 25 m/s

An object is thrown vertically upwards with an initial velocity of +5 m/s and then comes back down. What is the final velocity when it returns to its initial height? Ignore air resistance.

A thoughtful person on a bridge reflecting on his awesome Physics class sees a small stone by his feet. Hmm, he thought to himself. Using his foot he slowly nudged the stone off the surface of the bridge and using his cell phone he timed how long it took to hit the water, about 1.75 s. How high (m) is the bridge above the water? (neglect air resistance)

Standing on the roof of a 95-m tall building, a girl holds her hand past the edge and throws a ball straight up at 8 m/s. The ball rises, then falls and strikes the ground. Considering "up" to be the positive direction, find the ball's velocity v when it is 40 m above the ground. Remember to include a "-" sign if the velocity is negative. V = m/s