question_answer 8)

An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s–2? 

Answer:

Here, m = 1500 kg, a = – 1.7 m s–2, F = ? F = ma F = 1500 (–1.7) N = – 2550 N Negative sign indicates that force is opposing the motion of the vehicle.