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6 2006 AP® PHYSICS B FREE-RESPONSE QUESTIONS (Form B) 2. (15 points)
A small block of mass M is released from rest at the top of the curved frictionless ramp shown above. The block
slides down the ramp and is moving with a speed 3.5u0 when it collides with a larger block of mass 1.5M at rest
at the bottom of the incline. The larger block moves to the right at a speed 2u 0 immediately after the collision.
Express your answers to the following questions in terms of the given quantities and fundamental constants.
(a) Determine the height h of the ramp from which the small block was released.
(b) Determine the speed of the small block after the collision.
(c) The larger block slides a distance D before coming to rest. Determine the value of the coefficient of kinetic
friction m between the larger block and the surface on which it slides.
(d) Indicate whether the collision between the two blocks is elastic or inelastic. Justify your answer. © 2006 The College Board. All rights reserved.
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- Fall '09