A model rocket is constructed with a motor that can provide a total impulse of 32.0 N·s. The mass of the rocket is 0.139 kg. What is the speed that this rocket achieves when it is launched from rest? Neglect the effects of gravity and air resistance.

You wake up one morning to find yourself in a strange room with opaque walls, and no visible doors or windows. You decide to do some experiments to find out more about your strange situation. Your own body mass is 59.1 kg. This time you drop a ball from a height of 1.93 m and it hits the floor 0.251 s after you drop it. This time you suspect you are on a rocket that has just left the surface of the Earth, and is still not too far above the ground. What do you deduce the rocket s acceleration to be?      82.4 m/s^2      51.5 m/s^2      71.1 m/s^2      61.3 m/s^2

A 160 g baseball is thrown with a speed of 20 m/s. It is hit straight back toward the pitcher at a speed of 40 m/s. The impulsive force of the ball registers at 0.60 milli seconds. What is the average force that the bat exerts on the ball?

A professional golfer is examining a video of a practice swing. The high‑speed footage shows that his club is in contact with the ball (which was initially at rest on the tee) for only Δ?=0.971 ms, and the radar gun clocks the speed of the ball as ?b=146 mph after it comes off the club. The golf ball has a mass of ?b=45.9 g. What is the magnitude of the impulse imparted to the ball by the club? What is the magnitude of the average force of contact between the club and the ball?