Which of the following is possessed by a moving object, but not by a stationary

Question

Which of the following is possessed by a moving object, but not by a stationary object ? Energy Mass Inertia Kinetic energy Which has the greater kinetic energy a 1-ton car moving at 30 m/s or a half-ton car moving at 60 m/s? The half-ton car The 1-ton car Both have the same kinetic energy. It cannot be determined because the mass of the cars can't be found. A 20 N ball and a 40 N ball are dropped at the same time from a height of 10 meters. Air resistance is negligible. Which of the following statements is accurate? After 1 second has elapsed, both balls have the same kinetic energy, since they have the same acceleration. The heavy ball has a greater acceleration and falls faster. Both balls hit the ground at the same time but gravity does more work on the heavy ball than on the light balls. The light ball has a greater speed, since it can accelerate faster than the heavy ball. When work is done by a force on an object, then which of the following is true? The speed of the object must change. The object does an equal amount of work on the force. The work done is equal to the change of total kinetic energy of the object plus any energy appearing as heat, light, or sound. The object must change height above the ground. The force cannot take energy away from the object. If the speed of a car is doubled but the brakes apply the same force, the distance required to stop the car changes by a factor of 1/4. 1/2. 1. 2. 4.

Explanation / Answer

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26.

A: D (kinetic energy)

27.

A: A (the half-ton car)

28.

A: C

29

A: C

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