What kind of energy does a skier have standing still at the top of a hill?
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Ответ:
Ответ:
12 m/s
Explanation:
a = 4 m/s^2
u = 24 m/s
t = 3 second
Let the velocity of the ball after 3 second is v.
Use first equation of motion
v = u + a t
v = 24 - 4 x 3
v = 24 - 12 = 12 m/s