10. An ice skater with a mass of 65 kg pushes off against a second skater with a mass of 35 kg. Both skaters are initially at rest (a). What is the total momentum of the system after they pushed off? (b). If the larger skater moves off with a speed of 5 m/s, what is the corresponding speed of the smaller skater?

4. A 1590-kilogram truck moving with a speed of 23.0 m/s runs into the rear end of a 1090-kilogram stationary car. If the collision is completely inelastic, how much kinetic energy is lost in the collision? sf6 60 ssfot sf60

3. A 1.2 kg ball falls vertically from a certain height and just before hitting the ground it acquires a speed of 25 m / s. If the ball bounces with an initial speed of 10 m / s, what momentum acts on the ball during contact with the ground?

There are two cars, A and B, that have initial momentum (26 kg.m/s) and (-11 kg.m/s), respectively. The final momentum of car A is (4 kg.m/s). The final momentum of car B (after collision) (in kg.m/s) is B. 11 .a 6. .b o 7 .C O 4 .d o 9. .e O

I.  A lump of clay (m = 3.01 kg) is thrown towards a wall at speed v = 3.15 m/s.  The lump sticks to the wall.  (a) What kind of collision is it?  Is momentum conserved during this collision?  Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision.   II.  Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 3.15 m/s. (a) What kind of collision is it?  Is momentum conserved during this collision?  Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision.   III.  Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 2.24 m/s. (a) What kind of collision is it?  Is momentum conserved during this collision?  Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic…

1.A charging bull elephant with a mass of 5240 kg comes directly toward you with a speed of 4.55 m/s. You toss a 0.150-kg rubber ball at the elephant with a speed of 7.81 m/s. (a)When the ball bounces back toward you, what is its speed? (b) How do you account for the fact that the ball’s kinetic energy has increased? Explain and draws.

if a 2 kg object is moving with a velocity of 3.5 m/s to the north direction, how much is its momentum? how much is its kinetic energy? 7 kgm/s to north, 12.25 J O 7 kgm/s to south, 12.3 J O 3.5 kgm/s to north, 7 J 7 kgm/s, 7 J