In a collision between two unequal masses, how does the impulse imparted to the smaller mass by the larger mass compare with the impulse imparted to the larger mass by the smaller one? A) It is larger. B) It is smaller. C) They are equal. D) The answer depends on the ratio of the masses. E) The answer depends on how fast they are moving.

Find the % difference in the mass measured by weighing and the mass obtained using impulse and the change in velocities. mass: 1.85 kg

1a. what are the impulses of the following exterior forces during the thrust stage if the average mass if the system (rocket + engine) is 0.040 kg  Gravity: Igravity =  Drag: Idrag =  1b. what is the total impulse, Itotal, during the thrust stage

Problem 6 The magnitude of the net force exerted in the x direction on a 5 kg particle varies in time as shown in the plot. (a) Find the impulse of the force over the 6-second time inter- val (b) Find the final velocity the particle attains if it is origi- nally moving at 1.0 m/s in the same direction at t = 0. (c) Find the change in kinetic energy due to the impulse. Fx (N) 4 3 2 1 1 2 3 4 time t(second) 5 6

3.) When two gliders collide on an air track, which statement will be true: A) The momentum of any single glider is conserved. 3) B) Friction does not exist. C) The sum of momentum (both gliders) BEFORE collision equals the sum of momentum AFTER. D) All the statements above are false. 4.) A skydiver is at a height of 35,000 ft and is falling at 80 miles per hour. The skydiver has: A) Only Potential energy B) Only Kinetic energy 4). C) Potential energy AND Kinetic energy D) Neither form of energy

Two cars have the same mass. Car 1 is travelling northward at a speed of 45 mi/hr. Car 2 is travelling southward at a speed of 45 mi/hr. The cars a)  have the same momentum and kinetic energy. b)  have the same momentum but different kinetic energies. c)  have different momenta but the same kinetic energy. d)  Have different momenta and kinetic energy.

5) A block of mass of 2 kg, moving on a frictionless surface with a velocity of 2 m/s to the right, collides with a block of mass 3 kg approaching the first block at 5 m/s, as shown in the figure. After the collision, the 3 kg block recoils with a velocity of 0.6 m/s. Find the final velocity and direction of motion for the 2 kg block. 5 m/s 2 m/s 3 kg 2 kg