1.Solve the following
A) A bus starts from the stop and takes 50sec to get the speed of 10m/s.If the mass of the bus along with the passengers is 10000kg, calculate the force applied by the engine of bus to push the bus at a speed of 10m/s.
b) A vehicle having mass equal to 1000kg is running with a speed of 10m/s.After applying the force of 1000N for 10sec. what will happen to the speed of the vehicle?
c)Find the recoil velocity of a gun having mass equal to 8kg, if a bullet of 25gm aquires the velocity of 400m/s after firing from the gun.
d)A girl of 30kg mass is running with a velocity of 2m/s.She jumps over a stationary cart of 3kg while running.Find the velocity of the cart after jumping of boy.