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ValentinkaMS [17]
3 years ago
7

. How much power is used to move a 5 kg mass 28 meters in 8 seconds?

Physics
1 answer:
saul85 [17]3 years ago
6 0

Answer:

171.5Watts

Explanation:

Given parameters:

Mass  = 5kg

Distance  = 28m

Time  = 8s

Unknown:

Power = ?

Solution:

Power is the rate at which work is done;

       Power  = \frac{work done }{time taken}

Work done  = force x distance = mg x d =

  m is the mass

   g is the acceleration due to gravity

   d is the distance

  Work done  = 5 x 9.8 x 28 = 1372J

     Power = \frac{1372}{8}   = 171.5Watts

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