Question

Part A : Image Part B: What was the direction of the average force exerted on your car during braking? Part C: How far you travel while braking?

Answer 1

Procedure

Part A

a ) v = vo + a*t ( the acceleration will be negative )

9.50 m/s = 16 m/s + a*1.5

`\begin{gathered} a=(9.50-16)/(1.5) \\ a=-4.33m/s^2 \end{gathered}`

Now, the force

Part B

Opposite to the direction of motion

Part C

`\begin{gathered} d=v_ot-(at^2)/(2) \\ d=16\cdot1.5-(4.33\cdot1.5^2)/(2) \\ d=19.12\text{ m} \end{gathered}`