Question
Asked Oct 31, 2019
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A 845-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time? 

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Expert Answer

Step 1

Find acceleration of the car...

We have
v = u+ at
Given , initially the car is at rest u 0
V = at
a v/t 30/5 6 m/s2
Average force acting on the car is,
F ma (845)(6) = 5070 N
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We have v = u+ at Given , initially the car is at rest u 0 V = at a v/t 30/5 6 m/s2 Average force acting on the car is, F ma (845)(6) = 5070 N

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