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Wittaler [7]
2 years ago
12

A roller coaster is stationary at the top of a ramp.

Physics
1 answer:
Serjik [45]2 years ago
6 0

Answer:

A

Explanation:

The roller coaster is stationary so the kinetic energy would be zero, but it is at the top of ramp so the potential energy would be high as its gravitational  so it would have to be A

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Answer:

Impulse = Average force x time of contact

Explanation:

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When padding is there, the time interval of contact is large and thus, the force exerted by the body is small.

So, when a person falls on the tile floor, there is no compression and thus, the time of contact is very small and thus the impulsive force is very large, due to  which the body may damage.

So, when a person falls on the carpeted floor, there is a compression and thus, the time of contact is comparatively large and thus the impulsive force is small, due to  which the body may safe.

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3 years ago
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