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A plane drops a hamper of medical supplies from a height of 5890 m during a practice run over the ocean.

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A plane drops a hamper of medical supplies from a height of 5890 m during a practice run over the ocean. The plane’s horizontal velocity was 117 m/s at the instant the hamper was dropped.

What is the magnitude of the overall velocity of the hamper at the instant it strikes the surface of the ocean? The acceleration of gravity is 9.8 m/s2

  Answer in units of m/s

 

asked Sep 15, 2014 in AP Physics C by anonymous
edited Sep 15, 2014 by PhysicsDude

1 Answer

0 votes
Define downward as positive y direction.

First, find the time it takes it to reach the ocean. ||h=\frac 12gt||.

Then find the y component of the velocity when it hits the ocean: ||v_y=gt||.

Find the magnitude of final velocity ||v^2=v_y^2+v_x^2||.
answered Sep 15, 2014 by PhysicsDude (21,750 points)
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