A 30-Kg Block Is on a Frictionless Horizontal Surface $\degree$ Above the Horizontal Is Applied to the Block

question 76

Multiple Choice

A 3.0-kg block is on a frictionless horizontal surface.The block is at rest when,at t = 0,a force (magnitude P = 2.0 N) acting at an angle of 22 $\degree$ above the horizontal is applied to the block.At what rate is the force P doing work at t = 2.0 s?

• A)2.3 W
• B)2.0 W
• C)1.4 W
• D)1.7 W
• E)1.2 W

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