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Q. 7

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 227

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Short Answer

A 20 g particle is moving to the left at 30 m/s. A force on the particle causes it to move the the right at 30 m/s. How much work is done by the force?

Net work done is zero.

See the step by step solution

Step by Step Solution

Step1: Given information

A 20 g particle is moving to the left at 30 m/s.

A force on the particle causes it to move the the right at 30 m/s.

Step2: Explanation

Work done by force is given by the Change in Kinetic Energy.

Lets assume

vo be the initial velocity = -30 m/sv1 be the final velocity =+30 m/s

Now find the work done as Change in Kinetic Energy

W=Change in Kinetic Energy

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