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joja [24]
3 years ago
12

A 12 kg ball moving at 20 m/s strikes another ball at rest. After a completely inelastic collision, the balls move at 10 m/s. Wh

at was the mass of the second ball?
Physics
1 answer:
Alborosie3 years ago
6 0
(12)(20)+(x)(0)=(12+x)(10)
240=120+10x
120=10x
x=12 kg
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The velocity of the girl is  -4.8 m/s.

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Note that the negative sign shows that the velocity of the girl is in opposite direction that that of the girl.

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These laws explain why objects in movement tend to maintain the same velocity for a short period of time.

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8 0
2 years ago
Henry was giving the school toy for his birthday he can use it to tell how fast someone is moving at the moment in time the toy
pochemuha

Answer:

The toy must calculate the person's speed/velocity

Explanation:

Since the school toy given to Henry can be used to tell how fast someone is moving, the toy must be able to calculate the person's speed/velocity using the <u>average distance</u> covered by the person divided by <u>time taken</u> to cover the distance; average distance ÷ time taken.

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Answer:

Explained below

Explanation:

To explain this, let's consider a tennis ball being launched from the top of a very high building.

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