Answer:
Power = 70 W
Explanation:
Given that,
Force, F = 70 N
Height, h = 5 m
Time, t = 5 s
We need to find the power of the object. We know that,
Power = work done/time
Put all the values,
So, the required power is 70 W.
It's speed is 48 km/hr.
Answer: friction reduces the speed during motion
The more the friction, the lesser the speed during motion
density =mass/volume
density=15/2
density=7.5 g/cm³
Strong Nuclear
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