The stopwatch was turned on when the plane’s speed was already 20m / s and its acceleration

univerkov | December 21, 2020 | education

The stopwatch was turned on when the plane’s speed was already 20m / s and its acceleration was 2m / s. Find the speed of the plane after 4 seconds.

Given:
v0 = 20 m / s
a = 2 m / s ^ 2
t = 4 sec
Find: v -?
Decision:
v = v0 + at
v = 20 m / s + 2m / s ^ 2 x 4 sec = 28 m / s
Answer: v = 28 m / s

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