Impulse and the change in momentum


A soccer ball of mass 0.5 kg,0.5\text{ kg}, initially at rest, is kicked by a force of magnitude 1200 N1200\text{ N} for 15 ms.15\text{ ms}. What is the velocity of the ball after the kick?

A water-rocket of mass 2 kg2\text{ kg} blasts off from the ground. The lifting force applied on the rocket by the water is 24 N,24\text{ N}, and the air resistance is negligible. Assuming that the mass of the water-rocket does not change, how fast will the rocket be after 55 seconds?

The gravitational acceleration is g=10 m/s2.g=10\text{ m/s}^2.

A man pushes a moving ball on a frictionless floor. If the man pushes with magnitude 11 N11\text{ N} for 55 seconds, what is the change of momentum the ball experiences?

Tiger Woods can hit a golf ball quite hard. A golf ball just after being hit by Mr. Woods has a kinetic energy of 100 J100~\mbox{J} and a momentum of 3 kg m/s3~\mbox{kg m/s}. What is the mass of the golf ball in grams?

A golfer strikes a golf ball of mass 0.04 kg0.04\text{ kg} with a force of magnitude 400 N.400\text{ N}. If the time of impact between the golf club and the ball is 3 ms,3\text{ ms}, what is the velocity of the ball after the strike?


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