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pentagon [3]
3 years ago
5

A boy pulls a wagon full of newspapers down the sidewalk at a constant acceleration. Suddenly, half the newspapers fall off the

wagon. If the boy continues to pull with the same force as before, what happens?
A.The net force remains constant.

B.The wagon suddenly speeds up.

C.The mass that he is pulling does not change.
Physics
1 answer:
vitfil [10]3 years ago
5 0
The answer is B

rtheojdjsfioaj



      
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A sled is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. The sled's potential energy isJ. (Formula: PE =
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Data:

h = 2m
m = 45 Kg
PE = ? (Joule)

Adopting, gravity (g) ≈ <span>9,8 m/s² 
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Formula: PE_{grav}  = mass * g * height

Solving:

PE_{grav} = mass * g * height
PE_{grav} = 45*9,8*2
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Answer:
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