The frequency of a wave becomes higher due to the object moving at a fast pace coming towards you with shorter wavelengths (depending on the speed) aka the Doppler Effect.
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1.Momentum is conserved
3.Kinetic energy is conserved
6.Object's bounce apart
In perfectly elastic collision, the momentum and kinetic energy of teh colliding molecule is preserved because there is no loss in energy from the collision.
Explanation:
Ideally most collisions are inelastic meaning some energy is lost in the collision mostly as heat energy. This is why in inelastic collisions, the molecules will have a reduced momentum and kinetic energy. An example of an inelastic collision is a bouncing tennis ball on the tennis court. With every bounce, it loses some energy hence its height of bounce after every bounce reduces until the ball stops bouncing.
Learn More:
For more on elastic and inelastic collisions check out;
brainly.com/question/838453
brainly.com/question/2356330
brainly.com/question/7693152
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brainly.com/question/13906385
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What's the answer choices?
Answer:
A pure element.
Explanation:
Calcium, being whatever weight, is a pure element.
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Answer:

Explanation:
From the question we are told that:
Focal length of lens 
Image distance
Height of image
Generally the lens equation is mathematically given by

Where
is Subject



Therefore the distance between the person and the car is
