A 16-Kg Ball Is Attached to the End of a 0

question 26

Multiple Choice

A 1.6-kg ball is attached to the end of a 0.40-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point of its swing, when it is moving horizontally, the ball collides with a 0.80-kg block initially at rest on a horizontal frictionless surface. The speed of the block just after the collision is 3.0 m/s. What is the speed of the ball just after the collision?

• A) 1.7 m/s
• B) 1.1 m/s
• C) 1.5 m/s
• D) 1.3 m/s
• E) 2.1 m/s

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Polygraph

A machine designed to detect lies by measuring physiological responses such as blood pressure, pulse, and respiration, under the assumption that lying produces distinctive responses.

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