SOLUTION: A 1,500 kg car accelerates from 44 km/h to 80 km/h in 10 s. What was the net force exerted on the car? I know that F=ma but I am confused about what to do because it asks for the

Question 568206: A 1,500 kg car accelerates from 44 km/h to 80 km/h in 10 s. What was the net force exerted on the car?
I know that F=ma but I am confused about what to do because it asks for the net force do I add 44 and 88 or subtract the terms?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
First find the acceleration of the car. We have

(kilometers per hour, per second). However we want to convert kilometers per hour to meters per second. 1 kph is roughly .2778 m/s, and it turns out that 3.6 kph/s is exactly 1 m/s^2. So a = 1 m/s^2.

We use F = ma to obtain

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