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Lewis is towing a 1140kg car. His truck pulls with a force of 2880 N, and increases the car's velocity from 0 to 6.4m/s. How long did Lewis apply the force for to achieve this change in velocity? 2.5s
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7 votes
Lewis is towing a 1140kg car. His truck pulls with a force of 2880 N, and increases the car's velocity from 0 to 6.4m/s. How long did Lewis apply the force for to achieve this change in velocity?

2.5s
16.2s
8.1 s
9.9 s

User Floatingmuseum
by
2.6k points

2 Answers

26 votes
26 votes
I don’t know please help me please 16.2s
User Lakshma Gopidi
by
2.7k points
19 votes
19 votes

Answer:

2.5 s

Step-by-step explanation:

F = ma

F = m(v - u/t)

2880 = 1140(6.4/t)

t = 7296/2880

t = 2.53

t ≅ 2.5 s

User Pieter Alberts
by
3.1k points
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