Answer to Question #308778 in Physics for Hamza

Question

A different car accelerative from 0.12 m/s to 0. 52 meter per second that celebration of the car was 0.0 40 m/s squared the work done to accelerate the car was 0.48 joules

calculate the resultant force force needed to accelerate the car explain why the car has a maximum speed

Answer 1

The work done by a force

$$W=Fd=F\frac{v_f^2-v_i^2}{2a}$$

Hence, the required force

$$F=\frac{2aW}{v_f^2-v_i^2}$$

$$F=\frac{2*0.040*0.48}{0.52^2-0.12^2}=0.15\:\rm N$$