i. A ball of mass 57.0 g is held just above a of mass 590 g. With their centers vertically aligned, both balls are released from rest at the same time, to fall through a distance of 1.20 m. Assume that an elastic collision with the ground instantaneously reverses the velocity of the larger ball while the smaller ball is still moving down. Next, the two balls meet in an elastic collision. To what height does the smaller ball rebound?

44. The mass of the blue puck in Figure P9.44 is 20.0% greater than the mass of the green puck. Before colliding, the pucks approach each other with momenta of equal magni- tudes and opposite directions, and the green puck has an initial speed of 10.0 m/s. Find the speeds the pucks have after the collision if half the kinetic energy of the system becomes internal energy during the collision. 30.0° 30.0° Figure P9.44

A 75.0 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped at him at a velocity of 33.0 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would their final velocities (in m/s) be in this case? (Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.) puck (m/s) goalie (m/s)

One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together after the collision and move off with a common velocity. Momentum is conserved. The speed of the object that is moving initially is 29 m/s. The masses of the two objects are 2.8 and 8.8 kg. Determine the final speed of the two-object system after the collision for the case (a) when the large-mass object is the one moving initially and the case (b) when the small-mass object is the one moving initially.

A 62.0 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped at him at a velocity of 20.0 m/s. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would their final velocities (in m/s) be in this case? (Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.)   puck _______________ m/s   goalie ______________ m/s

An elastic collision takes place between a 0.050-kg toy car moving at 10 × 10² m/h and a 0.014-kg toy car moving at 20 × 109 mm/yr.  What is the kinetic energy of the system? Express your answer with the appropriate units.

10: A 8.00-kg metal ball is hanging from a long, taut, and very light flexible wire when it is struck by a 1.00-kg stone traveling horizontally to the right at 9.0 m/s. You may model this as a perfectly elastic collision. The stone rebounds to the left, and the ball swings to a maximum height h above its original level. Hint: m, - m2 (v„), (V„), m, + m, 2m, -(V„). m, + m, (V2.), Perfectly elastic collision with object 2 initially at rest A) What is the momentum of the stone after the collision? B) What is the kinetic energy of the ball after the collision? C) Find the value of the maximum height h the ball rises to after the collision.

5. A block of mass 1.93 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding with a constant speed of 4.51 m/s to the north, which collides 100% elastically with a second, stationary block, of mass 4.08 kg, head-on, and rebounds back to the south, eventually colliding 100% elastically with a wall and rebounding northward. It then overtakes the second block, which is still moving north as a result of the first collision. What will be the speeds of the 1.93-kg and 4.08-kg blocks, respectively, after their SECOND collision with one another?     3.36 m/s and 2.07 m/s     4.27 m/s and 1.37 m/s     2.38 m/s and 1.72 m/s     2.35 m/s and 1.55 m/s

Block A (m=2.5kg) and Block B(m=3.5 kg, to the right of A) move on a frictionless horizontal surface. Initially, Blocl A is moving to the right st 6 m/s and Block B moves to the left with unknown speed. They collide head-on in a perfectly elastic collision. After the collision, block B moves to the right with a speed of 4.5 m/s. A) Find the speed of block B before the collision B)What is the velocity (magnitude and direction) of block A after collision?

Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. The green disk is initially at rest and is struck by the orange disk moving initially to the right at vi = 4.40 m/s as in Figure a, shown below. After the collision, the orange disk moves in a direction that makes an angle of 8 = 40.0° with the horizontal axis while the green disk makes an angle of = 50.0° with this axis as in Figure b. Determine the speed of each disk after the collision. of=1 m/s m/s Vgf= Before the collision After the collision. b of Ⓡ