please help In the figure, determine the character of the collision. The masses

Question

please help

In the figure, determine the character of the collision. The masses of the blocks, and the velocities before and after arc given. The collision is pertectly elastic. partially inelastic. completely inelastic. characterized by an increase in kinetic energy. not possible because momentum is not conserved. Two friends are standing on opposite ends of a canoe. The canoe is initially at rest with respect to the lake. The person on the right throws a very massive ball to the left, and the person on the left catches it. After the ball is caught (ignoring friction between the canoe and the water), the canoe is stationary. moving to the right. moving to the left. 13) A ball can be rolled down one of four different ramps, as shown below. The final elevation loss of each of the ramps is the same. Neglecting friction, for which ramp will the speed of the ball be the highest at the bottom? The speed of the ball will be the same for all ramps. Ramp X Ramp Y Ramp Z A person drops one rock from res. and it falls 100 meters down a cliff before hitting the ground The person then throws an identical rock downward. The amount of kinetic energy gained by the rock dropped from rest is that of the secound rock, and the magnitude of the change in the speed (between hitting the ground and the initial speed) fo the rock dropped from rest is that of the second roc equal to, greater than equal to, equal to less than, less than equal to, less than

Explanation / Answer

11)

completely inelastic as they move together.

12)

moving to the right.

as the conservation of momentum.

13)

A) same for all, since there is no friction and from the conservation of energy change in kinetic energy = change in potential energy.which is same for all.

14)

A) equal to, greater than

change in kinetic energy is same for both as the change in potential energy is same for both and change in kinetic = change in potential energy.

change in speed = acceleration*time

this time is more for the rock falling from rest.

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