MCAT Physics Question 12: Answer and Explanation

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Question: 12

12. A BASE jumper runs off a cliff with a speed of

Which of the following is closest to his speed after 0.5 seconds?

  • A.
  • B.
  • C.
  • D.

Correct Answer: B

Explanation:

This is a projectile motion question. The horizontal component of the jumper's velocity will remain

throughout the jump. The vertical component of his velocity starts at

After 0.5 seconds, it will be:

To get the overall velocity, consider the horizontal and vertical velocities using vector analysis and find the resultant. Doing so gives

This magnitude (speed) is just a bit under 6, which matches most closely to choice (B).

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