1.) Two people of the same mass climb the same flight of stairs. The first person climbs the stairs in 25 s; the second person does so in 35 s. a) Which person does more work?Explain b) Which person produces more power?Explain 2.) Lee pushes a 20 kg mass 10 m across a floor with a horizontal force of 80 N. Calculate the amount of work Lee does.

Question

1.) Two people of the same mass climb the same flight of stairs. The first person climbs the stairs in 25 s; the second person does so in 35 s.
a) Which person does more work?Explain
b) Which person produces more power?Explain

2.) Lee pushes a 20 kg mass 10 m across a floor with a horizontal force of 80 N. Calculate the amount of work Lee does.

Elena · Answer

1a)  W1=W2 = mgh
2a)  P1 > P2 ,  mgh/25 >mgh/35

2) W=Fs=80•10 =800 J

Damon · Answer

The work done = potential energy gained = m g h.
That is the same for both since m, g and h are the same for both

The power is the work per unit time.

Power = m g h/t
so smaller t ---> bigger power

franca orji · Answer

Calculate the work done when a person push acar from stationany position to a

       distance of 50m appliny a.    force of 200n.

Brendon · Answer

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Brendon · Answer

for minecraft education edition

1.) Two people of the same mass climb the same flight of stairs. The first person climbs the stairs in 25 s; the second person does so in 35 s.

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