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Problem:

Calculate the power required of a 60- kg person climbs a tree 5 meters high in 10 seconds. Acceleration due to gravity is 10 m/s².

Note:

The formula for power is ( P = W / t ) or ( P = m × a × d / t )

Given data:

m ( mass ) = 60 kg

a ( acceleration ) = 10 m/s²

d ( distance ) =  5 m

t ( time ) = 10 s

P ( Power ) = ? unknown

Solution:

The formula for power is ( P = W / t ) or ( P = m × a × d / t )

P = m × a × d / t

  = 60 kg  × 10 m/s²  × 5 m  / 10 s

  = 3000 kg·m² /s²   / 10 s

  = 300 J/s

  = 300 Watts

Answer:

The Power is equal to 300 J/s or 300 Watts

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