A ball is dropped from rest from a height h above the ground. Another ball is thrown vertically upwards from the ground at the instant the first ball is released. Determine the initial speed of the second ball if the two balls are to meet at a height h/2 above the ground. * , h/g square root of gh square root of gh/2 O square root of 2gh

starting from rest, a rocket is launched upward (a=4.20 m/s^2). At t=6.85 sec, the motor shuts off the rocket continues to coast upward until it reached its highest point. At highest point, a chute was introduced so that the rocket will fall at a constant speed of 0.935 m/s until it reaches the ground. Determine the maximum height, h, in meters

Alice and Tom dive from an overhang into the lake below. Tom simply drops straight down from the edge, but Alice takes a running start and jumps with an initial horizontal velocity of 25 m/s. Neither person experiences any significant air resistance. Just as they reach the lake below (select all answers that are true)   Group of answer choices: None of the above choices are correct. they will both have the same speed. the speed of Alice is larger than that of Tom. Alice reaches the surface of the lake first. They reach the surface of the lake at the same time. Tom reaches the surface of the lake first. the speed of Tom is larger than that of Alice.

While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 6.61 m/s. The stone subsequently falls to the ground, which is 17.3 m below the point where the stone leaves his hand. At what speed does the stone impact the ground? Ignore air resistance and use ?=9.81 m/s2 for the acceleration due to gravity. A) Impact speed: _________________________ m/s     B) How much time is the stone in the air? elapsed time: ____________ s

A stone is thrown upward from a cliff at an angle of 35 degrees above the horizontal with a speed of 47 m/s. The stone hits the ground 5.0 s later. a) What is the x component of the stones initial velocity? v47.0m/s 35 O51.0m/s 041.0 m/s 38.5 m/s O270 m/s

Freya clears a crossbar while pole vaulting. She releases the pole before she achieves her peak height.  It takes her 2 seconds to fall from her peak height to the landing pit.  The landing pit is 1.5 m high.  How high above the ground was Freya at the peak height of her vault?

A ball is thrown straight up with an initial speed of 15.5 m/s. At what height above its initial position will the ball have one‑half its initial speed? height:   m

A ball is thrown vertically upward with an initial speed v and reaches a maximum height y1. The same ball is thrown with an initial speed 3v to reach the maximum height y2. What is the correct relationship between y2 and y1? А. y2 = ½ y1 В. y2 = 2 y1 %D С. y2 = 4 y1 y2 = 9 y1 D.

A student fires a cannonball vertically upwards with a speed of 31.0m/s. Determine all unknowns and answer the following questions. Neglect drag and the initial height and horizontal motion of the cannonball. What was the cannonball's maximum height? unit How long did the cannonball rise? unit What was the cannonball's total flight time? unit

6. A ball is thrown vertically upward from the edge of a bridge 26.5 m high with an initial speed of 17.0 m/s. The ball falls all the way down and strikes the water below. Determine the time it takes the ball to strike the water. S ssf60 er be f60 ssf? ssf60ball D9JSS (S