Question

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

Answer 1

I don’t know please help me please 16.2s

Answer 2

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