Asked by Isis
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.
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.
Answers
Answered by
Elena
1a) W1=W2 = mgh
2a) P1 > P2 , mgh/25 >mgh/35
2) W=Fs=80•10 =800 J
2a) P1 > P2 , mgh/25 >mgh/35
2) W=Fs=80•10 =800 J
Answered by
Damon
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
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
Answered by
franca orji
Calculate the work done when a person push acar from stationany position to a
distance of 50m appliny a. force of 200n.
distance of 50m appliny a. force of 200n.
Answered by
Brendon
thumbs up if anybody joined my world do the image names agent, map, balloon, and pickaxe
Answered by
Brendon
for minecraft education edition
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