1. Two objects have the same kinetic energy, but different linear momenta. Which of the objects has the larger mass, the one with the larger linear momentum or the one with the smaller linear momentum? Explain. 2. Two objects have the same linear momentum, but kinetic energies. Which of the objects has the larger mass, the one with the larger kinetic energy or the one with the smaller kinetic energy? Explain.

3. An object having a mass of 8.00 [kg ]is moving in the negative x direction at a speed of 40.0 [m/s] when it undergoes a collision that lasts 0.250 [s]. After the collision the object is moving in the negative x direction at 50.0 [m/s]. (a) What is the impulse (magnitude and direction), and (b) what is the average force (magnitude and direction) acting on the object during the collision. 4. A 65.0 [kg] parachutist lands with a downward vertical velocity of 10.0 [m/s] and comes to a complete stop in 150. x 10-3 [s]. (a) What is his impulse on landing? (b) To achieve this impulse, what is the average impulsive force acting on the parachutist as he comes to a stop? (c) What is the ratio of the impulsive force to his weight?

5. Suppose, now, that after exiting the plane the parachute of the jumper in Question #4 fails to open and, as he falls, he achieves a downward terminal velocity of 70.0 [m/s] before hitting the ground. Once again assume that the time to come to a complete stop is 150. x 10-3 [s]. (a) What is his impulse on landing this time? (b) To achieve this impulse, what is the average impulsive force acting on him as he comes to a stop? (c) What is the ratio of the impulsive force he experiences without the parachute to that experienced with the parachute? 5. A 500. [kg] surveillance satellite is separated from its 1000. [kg] booster rocket by explosive bolts. If the relative speed at which the satellite and booster rocket separate is 1.50 [m/s], what is the impulse provided by the explosive volts?