Espring = 1/2kx^2
Espring = 1/2 • 50 • (0.4)^2
Espring = 4 J
Answer:
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Explanation:
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Any change in speed or direction of motion is acceleration.
Constant acceleration can mean ...
-- speeding up at a constant rate . . . gaining the same amount
of speed each second.
-- slowing down at a constant rate . . . losing the same amount
of speed each second.
-- changing direction at a constant rate . . . for example, going
around a circular path at a constant speed.
Using kinematic equation v=u+at......... 1.
v = final velocity = 0 m/s. u = initial velocity = 13.5 m/s.
a = -0.5 m/s².
Plug all the known values in 1 to find t