2 years ago

A train travels 79 kilometers in 4 hours and then 65 kilometers in 3 hours what is it average speed

Physics

1 answer:

omeli [17]2 years ago

7 0

19.75 kilometers in one hour.

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Answer:

15.10m/s

Explanation:

The mass of the ball(m)=400g = 0.4kg

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To find the speed of the ball, we make v the subject of the formula

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$v=\sqrt228 = 15.10 m/s$

The speed of the ball = 15.10m/s

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2 years ago

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Daniel [21]

Answer:

Density is determined by an object's mass and volume.

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If two objects take up the same volume, but one has more mass, then it also has a higher density.

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