REMARKS During the collision, the system lost almost 90% of its kinetic energy.

Question

REMARKS During the collision, the system lost almost 90% of its kinetic energy. The change in velocity of the pickup truck was only 10.0 m/s, compared to twice that for the compact car. This example underscores perhaps the most important safety feature of any car: its mass. Injury is caused by a change in velocity, and the more massive vehicle undergoes a smaller velocity change in a typical accident.

QUESTION If the mass of both vehicles were doubled, how would the final velocity and the change in kinetic energy be affected? (Select all that apply.)

During the collision, the system lost almost 90% of its kinetic energy. The change in velocity of the pickup truck was only 10.0 m/s, compared to twice that for the compact car. This example underscores perhaps the most important safety feature of any car: its mass. Injury is caused by a change in velocity, and the more massive vehicle undergoes a smaller velocity change in a typical accident. If the mass of both vehicles were doubled, how would the final velocity and the change in kinetic energy be affected? (Select all that apply.

Explanation / Answer

The final velocities would each have the same magnitude as before.

The change in kinetic energy would be 2 times as great.

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