When a car crashes, do you think its speed can make a difference in the amount of damage done?

Physics

1 answer:

Oduvanchick [21]3 years ago

3 0

Answer:

Yes

Explanation:

An increased speed will result in an increased amount of energy, so when it crashes some of that energy will bounce back and crumple the car.

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A 10 kg rock that has been dropped from a 60 meter high cliff experiences an average force of air resistance of 30 N. Calculate

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Answer:

4086 J

Explanation:

The potential energy is transformed to kinetic energy less the frictional energy. Potential energy= mgh where m represent mass, g is acceleration due to gravity and h is the height of cliff

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$mgh-Fh= 0.5mv^{2}= KE$