Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

A modern car can develop an acceleration four times greater than an antique car. If they accelerate over the same distance, what would be the velocity of the modern car compared to the antique car?
Options
A Half as much
B The same
C Twice as much
Correct Answer
D Four times as much
Correct Answer

Option C is the correct answer.

Detailed Explanation

For the same distance, final velocity is proportional to the square root of acceleration, so four times acceleration gives twice the velocity.

Hint

Use the kinematic equation v² = u² + 2as, starting from rest.

Question Info