A 20-kg rock moving at 12.5 m/s in a straight line explodes into two unequal pieces. One piece (8.7 kg) flies off at 15.4 m/s at an angle of 35o above the original straight line motion.  What is the speed and direction of the second piece relative to the original motion?

Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible friction between his feet and the ice. A friend throws Olaf a ball of mass 0.400 kg that is traveling horizontally at 10.5 m/s. Olaf's mass is 72.8 kg. If Olaf catches the ball, with what speed vf do Olaf and the ball move afterward? If the ball hits Olaf and bounces off his chest horizontally at 8.40 m/sm/s in the opposite direction, what is his speed vf after the collision?

In this problem, an astronaut is landes on the 6.1×1021 kg asteroid traveling at 9830 m/s and detonates a nuclear bomb. The asteroid breaks into two pieces of equal mass. One piece will fly off at an angle of 30∘ and speed 9700 m/s. What will be the speed and angle of the second piece?

As part of a carnival game, a ?b=0.528 kgmb=0.528 kg ball is thrown at a stack of 22.8 cm22.8 cm tall, ?o=0.403 kgmo=0.403 kg objects and hits with a perfectly horizontal velocity of ?b,i=11.1 m/s.vb,i=11.1 m/s. Suppose that the ball strikes the topmost object. Immediately after the collision, the ball has a horizontal velocity of ?b,f=3.10 m/svb,f=3.10 m/s in the same direction, the topmost object has an angular velocity of ?o=4.03 rad/sωo=4.03 rad/s about its center of mass, and all the remaining objects are undisturbed. Assume that the ball is not rotating and that the effect of the torque due to gravity during the collision is negligible. If the object's center of mass is located ?=16.0 cmr=16.0 cm below the point where the ball hits, what is the moment of inertia ?oIo of the object about its center of mass?   ?o=Io=   kg⋅m2kg⋅m2 What is the center of mass velocity ?o,cmvo,cm of the tall object immediately after it is struck?

Q.10. A bullet of mass m = 20 g is fired horizontally into a wooden block, of mass M = 1 kg, resting on a horizontal table. The speed of the bullet just before reaching %3D the block is v, = 600 m/s. If the bullet imbeds in the block, then the speed of the (bullet, block) system immediately after the collision is: a. v = 0 b. v = 14.634 m/s %3D M c. v = 17.475 m/s d. v = 11.765 m/s m + M

A small comet moves at velocity 5050 m/s. Heat from the sun makes it break into two smaller pieces. The first piece has mass 1250-kg and velocity 5720 m/s in the same direction as before. The second piece has mass 2400-kg. What is its velocity? magnitude   direction

a fast moving hockey player of mass 85.5kg runs into a stationary player of the opposing team of mass 91.3kg after the collision the two plyaers slide together on the ice at a speed of 1.44m/s. What was the initial speed of the moving player?

Question #2 and #3. Thanks!

he figure shows an approximate plot of force magnitude F versus time t during the collision of a 56 g Superball with a wall. The initial elocity of the ball is 35 m/s perpendicular to the wall, in the negative direction of an x axis. It rebounds directly back with pproximately the same speed, also perpendicular to the wall. What is Fmax, the maximum magnitude of the force on the ball from the all during the collision? Number i .98 Units N F 9 t(ms) b

Godzilla is fighting Mothra in Tokyo (again). Godzilla climbs a tall building and, while standing on the top of the building, Mothra slams into him at a speed of 460 m/s. Godzilla grabs onto Mothra during the impact and they are thrown from the top of the building. If Godzilla has a mass of 9.6 * 103 kg and Mothra has a mass of 3.2 * 103 kg, how fast are the two monsters going as they pitch from the top of the building?