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2 years ago

A student drops a ball from a slope. He notices the ball rolling down as shown in the image.

Physics

1 answer:

zavuch27 [327]2 years ago

5 0

Answer:

You are correct, it is (3) the ball is in motion as it rolls down the slope.

Explanation:

For number 1 it would make sense because how would the student be in motion if he is just standing there throwing the ball down the slope, not himself.

For number 2 still wouldn't make so much sense since we are talking about the ball being in motion not the student.

For number 3 it seems the most reasonable because the ball is in motion as it is rolling down the slope.

For number 4 it doesn't make sense for a ball to lose its shape just by rolling, also even if you're like: "oh, but what if its leaking air or has a hole??" well easy then. It STILL wouldn't matter because in the sentence it never specifies it has a "hole" or is "leaking air" therefore this answer is wrong.

YOUR ANSWER IS number 3.

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A stone fell from the top of a cliff into the ocean. In the air, it had an average speed of 161616 \text{m/s}m/sstart text, m, s

givi [52]

Answer: It takes the stone 7seconds in air and 5seconds in water

Explanation: complete question: How long did the stone fall in air and how long did it fall in the water?

total distance = sum of velocity * time for both legs of the journey;

let the time taken in air be t

hence time taken in water is 12-t

127 = 16*t + 3(12-t)

127 = 16t + 36 - 3t

127 - 36 = 16t - 3t

91 = 13t

t = 91/13 = 7 seconds

Hence time taken in air = 7 seconds

time taken in water is 12 - 7 = 5 seconds

6 0

3 years ago

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Tatiana [17]

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When a person purchases a rack switch and finds the rack ears there, it is a signal that the item can be secured firmly to rails. Sometimes, the rack ears also appear as extensions.

Learn more about rack ears here:

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2 years ago

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Ahat [919]

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almond37 [142]

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3 years ago

In the first direct detection of gravitational waves by LIGO in 2015, the waves came from A. the collapse of a nearby star into

diamong [38]

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<h3>What are gravitational waves?</h3>

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