becherashlee becherashlee

16-01-2024
Physics

Answered

6.
The brakes are applied to a moving van, causing it to uniformly slow down. While slowing, it moves a distance of 40.0 m in 7.5 s to a final velocity of 1.85m/s, at which point the brakes are released.
(a) What was its initial speed (in m/s), just before the brakes were applied?
(b) what was the acceleration (in m/s^2) while the brakes were applied? ( assume the initial direction of motion is in the positive direction. Indicate the direction with the sign of your answer)

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