A ball is thrown straight up. Neglecting air resistance, which statement is not

Question

A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding the energy of the ball? A small boat costs at constant speed under a bridge. A heavy sack of sand is dropped from the bridge onto the boat. The speed of the boat Two identical billiard bait traveling at the same speed have a head-on collision and rebound. It the bails had twice the mass, but maintained the same size and speed, how would the rebound be different? The space shuttle. In circular orbit around the Earth, collides with a small asteroid which ends up in the shuttle s storage bay. For this collision. A baseball is pitched horizontally toward home plate with a velocity of 110 km/h In which of the following scenarios does the baseball have the largest change In momentum? A railroad tank car contains milk and rolls at a constant speed along a level track. The milk begins to leak out the bottom. The car then A bowling ball hangs from a 1.0 m long cord, see figure below. A 200-gram putty ball moving 5.0 m/s hits the bowling ball and sticks to it, causing the bowling ball to swing up A 200-gram rubber ball moving 5.0 m/s hits the bowling ball and bounces straight back at nearly 5 m/s. causing the bowling ball to swing up Describe what happens

Explanation / Answer

9) d) sum of kinetic and potential energy is constant

10) b) decreases

11) c) No differences

12) a) momentum is conserved

13) c) the base ball is hit back to the pitcher at speed of 110km/h

14 ) b) speeds up

15) c) in second case it goes up farther than first

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