## Falling objects drop with an average acceleration of 9.8 m/s2. An arrow is shot with a velocity of 11.76 m/s straight down from the top of a

Question

Falling objects drop with an average acceleration of 9.8 m/s2. An arrow is shot with a velocity of 11.76 m/s straight down from the top of a tall castle hitting an armored knight with a downward velocity of 49 m/s. How long was the arrow in flight?

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Physics
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2021-07-21T13:07:09+00:00
2021-07-21T13:07:09+00:00 1 Answers
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## Answers ( )

Answer:3.8 secs

Explanation:Parameters given:

Acceleration due to gravity, g = 9.8

Initial velocity, u = 11.76 m/s

Final velocity, v = 49 m/s

Using one of

Newton’s equations of linear motion,we have that:where t = time of flight of arrow

The sign is

positivebecause thearrow is moving downward, in the same direction as gravitational force.Therefore:

The arrow was in flight for 3.8 secs