A car has a mass of 710 kg. It starts from rest and travels 40.0 m in 3.0s. The car is uniformly accelerated during the entire time. How big is the net force acting on the car?
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Mass of the car = 710 kg
Time taken to travel 40m = 3s
It is given that the car travels 40m in 3s starting from rest.
=> Initial Velocity ( u ) = 0
=> Final Velocity = 40 m/s
3
Force = Mass x Acceleration
=> F = m x a
But we know that acceleration = v-u
t
=> F = m( v - u )/t
=> F = 710 ( 40/3 - 0)/3
=> F = 710 x 40/9
=> F = 3155.55 N
Therefore, the magnitude of force acting on the car is 3155.55 N
Hope this helps you☺☺
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