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- A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 4.0 m/s, and her takeoff point is 1.1 m above the pool. Find how long her feet are in the air. Group of answer choices 1.03 2 0.28 s 0.22 s 0.44 sAt the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.97 m/s. A player cannot touch the ball until after it reaches its maximum height and begins to fall down. What is the minimum time that a player must wait before touching the ball?A steel ball is dropped from a building’s roof and passes a window, taking 0.13 s to fall from the top to the bottom of the window, a distance of 1.20 m. It then falls to a sidewalk and bounces back past the window, moving from bottom to top in 0.13 s. Assume that the upward flight is an exact reverse of the fall. The time the ball spends below the bottom of the window is1.61 s. How tall is the building?
- Nerve impulses in a human body travel at a speed of about 100 m/s. Suppose a person accidentally steps barefoot on a pebble. About how much time does it take the nerve impulse to travel from the foot to the brain (in s)? Assume the person is 1.60 m tall and the nerve impulse travels at uniform speed.A small rock is thrown vertically upward with a speed of 22.4 m/s from the edge of the roof of a 39.5 m tall building. The rock doesn't hit the building on its way back down and lands on the street below. Ignore air resistance. (a) What is the speed (in m/s) of the rock just before it hits the street? (b) How much time (in sec) elapses from when the rock is thrown until it hits the street?An object is thrown straight up from the top of a building that is 31.2 m high. The object is thrown with a velocity of 16.4 m/s. At the same time the object is thrown upwards, a person runs along the ground with a constant speed of 3.4 m/s. When the object hits the ground, how far has the person gone in meters?
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- A juggler throws a bowling pin straight up with an initial speed of 6 m/s from an initial height of 3.4 m. How much time elapses until the bowling pin returns to the same initial height?An express train passes through a station. It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150 m/s² as it goes through. The station in 210.0 m long. How fast is it going when the nose leaves the station?A ball is released from a crane, and hits the ground with a velocity of 17.8 m/s. How high up was the ball when it was released, and how much time did it take for it to hit the ground?