Preston Pushes a Wheelbarrow Weighing 500 N to the Top $\degree$

question 40

Multiple Choice

Preston pushes a wheelbarrow weighing 500 N to the top of a 50.0-m ramp, inclined at 20.0 $\degree$ with the horizontal and leaves it. Tamara accidentally bumps the wheelbarrow. It slides back down the ramp, during which a 60.0-N frictional force acts on it over the 50.0 m. What is the wheelbarrow's kinetic energy at the bottom at of the ramp? (g = 9.8 m/s²)

• A) 5550 J
• B) 6550 J
• C) 8150 J
• D) 13,100 J

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