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3 years ago

When you push a child on a swing, you are doing work on the child because _____.

Physics

2 answers:

max2010maxim [7]3 years ago

8 0

ur answer is A or also known as

When you push a child on a swing, you are doing work on the child because you are pushing against the force of gravity

hope this helps :)

julsineya [31]3 years ago

3 0

Thinking it’s A! Sorry if I’m wrong! :)

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Explain why wedges and screws are actually types of inclined planes.

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3 years ago

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3 years ago

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3 years ago

A small rubber ball is thrown at a heavier, larger basketball that is still. The small ball bounces off the basketball. Assume t

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2 years ago

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Nathan drops marbles down two ramps that have different lengths. It takes the marbles 10 seconds to reach the bottom of both ram

Sonbull [250]

<h2><u>Full Question:</u></h2>

Nathan drops marbles down two ramps that have different lengths. It takes the marbles 10 seconds to reach the bottom of both ramps.Which statement is TRUE?

answer choices

Marble 1 has a faster speed than Marble 2.

Marble 2 has a faster speed than Marble 1.

Both the marbles travel at the same speed.

There is not enough data to compare the speeds of marbles.

<h2><u>Answer:</u></h2>

Marble 2 has a faster speed than Marble 1.

Option B.

<h3><u>Explanation:</u></h3>

The speed is defined as the distance covered per unit time. Here in the question, 2 balls cover equal distances in same time.

Time taken by the ball = 10 seconds.

Distance covered by 1st ball = 20 cm.

Distance covered by 2nd ball = 3cm.

So speed of the 1st ball = 2cm/sec.

Speed of the 2nd ball = 3 cm /sec.

So,it's very much evident that speed of 2nd Marble is much higher than the speed of the 1st marble.

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3 years ago