If you were standing on a cart that was at rest and free to roll (ignore friction) and someone threw a 10 kg ball at you, you would
A. roll backward faster if you caught the ball higher above the ground.
B. roll backward faster if the ball bounced off of you elastically.
C. not move if you caught the ball because you are more massive than the ball.
D. roll backward faster if you caught the ball.
Answer: B
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Which of the following is not a fundamental force?
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A circuit contains a 2.0-M? resistor in series with an uncharged capacitor. When this combination is connected across an ideal battery,
the capacitor reaches 25% of its maximum charge in 1.5 s. What is its capacitance?
Why does "banking" (or tilting) a turning road create centripetal force?
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