Q. The minimum distance required to stop a car moving at 38.0 mi/h is 41.0 ft. What is the minimum stopping distance for the same car moving at 68.0 mi/h, assuming the same rate of acceleration?
Q. A 30.0 kg gun is resting on a frictionless surface. The gun fores a 50.0 g bullet with a muzzle velocity of 310.0 m/s.
a) Calculate the momenta of the bullet and the gun after the gun is fired.
b) Calculate the kinetic energy of both the bullet and the gun just after firing.