A hunter fires a 25.4g round at a 410 kg polar bear, who rests on a frictionless piece of ice.  If the muzzle velocity of the rifle is 799 m/s, calculate the speed of the polar bear if: The round embeds itself into the polar bear  The round bounces straight back in an elastic collision.

Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. Voi = 3.15 m/s as in Figure The green disk is initially at rest and is struck by the orange disk moving initially to the right at v a, shown below. After the collision, the orange disk moves in a direction that makes an angle of 0 = 38.0° with the horizontal axis while the green disk makes an angle of = 52.0° with this axis as in Figure b. Determine the speed of each disk after the collision. X V of Vgf= 1.66 Your response differs from the correct answer by more than 10%. Double check your calculations. m/s m/s a Before the collision After the collision b

A block with mass m, = 0.400 kg is released from rest on a frictionless track at a distance h, = 3.20 m above the top of a table. It then collides elastically with an object having mass m, 0.800 kg that is initially at rest on the table, as shown in the figure below. h m2 h2 (a) Determine the velocities of the two objects just after the collision. (Assume the positive direction is to the right. Indicate the direction with the signs of your answers.) V1 = m/s V2 = m/s (b) How high up the track does the 0.400-kg object travel back after the co ision? m (c) How far away from the bottom of the table does the 0.800-kg object land, given that the height of the table is h, = 1.85 m? m (d) How far away from the bottom of the table does the 0.400-kg object eventually land?

Two balls moving in opposite directions have velocities v1ix = 13_m/s and v2i,x = -8_m/s. If their masses are m = 2.5 kg and m2 = 10.kg, respectively, and if their collision is perfectly elastic, then predict the velocity of each ball following the collision. Vifx: -14.13_m/s -24.12 m/s -15.41 m/s -41.08_m/s -21.97_m/s -20.6 m/s А. D. В. E. С. F. /--/ Vzfx: 0.36 m/s В. 0.2145_m/s 0.2295_m/s 0.5734_m/s 0.4 m/s 0.2872_m/s А. D. Е. С. F.

A 5.0 kg ball is rolling north at 2.50 m/s when it collides with a 6.0 kg ball which isinitially at rest. Given that the collision is perfectly inelastic, calculate the final velocitiesof both balls.

A 2.00-g particle moving at 5.40 m/s makes a perfectly elastic head-on collision with a resting 1.00-g object. (Assume the 2.00-g particle is moving in the positive direction before the collision. Indicate the direction with the sign of your answer.) (a) Find the velocity of each particle after the collision. 2.00-g particle 1.00-g particle m/s m/s (b) Find the velocity of each particle after the collision if the stationary particle has a mass of 10.0 g. 2.00-g particle 10.0-g particle m/s m/s (c) Find the final kinetic energy of the incident 2.00-g particle in the situations described in parts (a) and (b). KE in part (a) KE in part (b) J J In which case does the incident particle lose more kinetic energy? case (a) case (b)

A fast car is speeding down a road with a velocity of v. It collides with a truck moving in the opposite direction that has a mass that is four times that of the fast car. They are both moving at the same speed. If the collision is elastic, then what are both of the vehicles velocities given as multiples of v.

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 ball moving at 10 m/s makes an off-center elastic collision with another ball of equal mass that is initially at rest. The incoming ball is deflected at an angle of30° from its original direction of motion. Find the velocity of each ball after the collision.

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