Answer: Option A
Explanation:
Acceleration is defined as the rate of change of the vellocity.
Then, if the acceleration is equal zero, the object has a constant velocity or a velocity equal to zero (also constant, of course)
Then, te correct option would be option A; resting, because an object resting has instantaneuos acceleration of zero.
Answer:
266.67Watts
Explanation:
Time = 2.5hr to seconds
3600s = 1hr
2.5hrs = 3600×2.5= 9000s
Force = 32N
Distance = 75km to m
1000m = 1km
75km = 1000×75 = 75000m
Power = workdone / time
Work = force × distance
Therefore work = 32N × 75000m
Work = 2400000Nm
Power = work ➗ time
Power = 2400000Nm ➗ 9000s
Power = 266.67Watts
Watts is the S. i unit of power
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