4. In a performance test, each of two cars takes 9.0 s to accelerate from rest to 27 m/s. Car A has a mass of 1400 kg, and car B has a mass of 1900 kg. Find the net average force that acts on each car during the test.

Impulse-Momentum Theory says

Since the cars were at rest at first. We can drop vector notation since we are only interested in magnitudes.

Solving for F_ave

For Car A

For Car B

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This page last updated on January 11, 2020