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zhuklara [117]
3 years ago
10

A freight car moves along a frictionless level railroad track at constant speed. The freight car is open on the top. A large loa

d of sand is suddenly dumped into the freight car. What happens to the speed of the freight car?
Physics
1 answer:
Fittoniya [83]3 years ago
3 0

The added weight of the sand puts more downward pressure on the wheels contacting the rails, which would cause the trains speed to decrease.

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Explanation:

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3 years ago
16x^2y^2-25a^2b^2<br>factorize the expression​
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Answer:

(4xy+5ab)(4xy-5ab)

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8 0
2 years ago
A 40kg load is raised to a height of 25m. If the operation requires 1 min, find the power required​
OlgaM077 [116]

Answer:

163.33 Watts

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 40 Kg

Height (h) = 25 m

Time (t) = 1 min

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Next, we shall determine the energy. This can be obtained as follow:

Mass (m) = 40 Kg

Height (h) = 25 m

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E = mgh

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E = 9800 J

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Energy (E) = 9800 J

Power (P) =?

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P = 163.33 Watts

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