Question

an object of 50kg gets the speed of 10m/s in 5sec from zero velocity. calculate the required force applied engine of the car

Answer 1

Given: v=10m/s, u=0m/s, Mass=50kg, t=5 sec

To find: Force applied on the engine of car

Solution: Using 1st equation of motion,,,

              v=u+at

             10=0+a(5)

             a=10/5

             a=2m/s^2

            By First law of motion,,,

             F= Mass * Acceleration

             F= 50kg * 2m/s^2

             F= 100 Newton