Question

a car initially at rest picks up a velocity of 90km/h in 40 seconds.if the mass of the car is 1500kg.Find the force developed by its engine.​

Answer 1

Answer:

A motorcar of mass 1200 kg is moving along a straight line with a uniform velocity of 90 km/h. Its velocity is slowed down to 18 km/h in 4 s by an unbalanced external force. Calculate the acceleration and change in momentum. Also calculate the magnitude of the force required. Solution. Given, mass of the car (m) = 1200kg

Explanation: