An ice skater decelerates for 5 sec. to a final speed of 12 m/s. If the deceleration was at a rate of 1.5m/s², what was the skater's initial speed?
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Answer:
by applying first epuation of motio.
Step-by-step explanation:
v=u+at
12=u +(-1.5)×5
12=u-7.5
u=12+7.5
u=19.5 m/s
where
u =initial velocity
v=final velocity
a=acceleration
t=time
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