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Considering the time interval after the ball is released and before it is caught

ID: 1373716 • Letter: C

Question

Considering the time interval after the ball is released and before it is caught, when does the gravitational potential energy of the ball have its minimum value? When the ball is released. When the ball has zero speed. When the ball reaches the highest point. When the ball has highest speed. The gravitational potential energy of the ball is always a constant. Question 5 A ball is tossed in the air and released. It moves up, reverses direction, falls back down again, and is caught at the same height it was released. No air resistance. When does the kinetic energy of the ball have its maximum value? When the ball is released because the speed is the highest. Not enough information The kinetic energy of the ball is always a constant. When the ball is caught because the speed is the lowest. When the ball reaches the highest point. Question 6 A ball is tossed in the air and released. It moves up, reverses direction, falls back down again, and is caught at the same height it was released. When does the kinetic energy of the ball have its minimum value? Not enough information The kinetic energy of the ball is always a constant. When the ball reaches the highest point. When the ball is released. Just before the ball the caught. Question 7 A ball is tossed in the air and released. It moves up, reverses direction, falls back down again, and ?s caught at the same height it was released. Ignore friction and air resistence. What about the mechanical energy of the ball? The mechanical energy of the ball is maximum when the ball is released. The mechanical energy of the ball is always a constant. The mechanical energy of the ball is maximum when the ball is caught. The mechanical energy of the ball is maximum when the ball reaches the highest point. None of above.

Explanation / Answer

Question 4

When the ball has highest speed

Question 5

When the ball is realeased because the speed is the highest

Question 6

When the ball reaches the highest point

Question 7

The mechanical energy is always a constant