Asked by Cassidy
A hunter shoots an arrow at a deer running directly away from him. When the arrow leaves the bow, the deer is at distance of 42 m. When the arrow strikes, the deer is at a distance of 51 m. The speed of the arrow is 68 m/s.
What must have been the speed of the deer? (m/s) How long did the arrow take to travel to the deer? (s)
What must have been the speed of the deer? (m/s) How long did the arrow take to travel to the deer? (s)
Answers
Answered by
oobleck
how long does it take the arrow to travel the 51m?
time = distance/speed = 51m / (68m/s) = 0.75s
so, since speed = distance/time, the deer's speed was (51-42)m/0.75s = 12 m/s
time = distance/speed = 51m / (68m/s) = 0.75s
so, since speed = distance/time, the deer's speed was (51-42)m/0.75s = 12 m/s
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