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Readme [11.4K]
3 years ago
8

Some of the energy the car gained as it was pulled was lost because of heat from friction. The rest of the energy was transforme

d into potential energy. How much potential energy does the roller coaster car have at the top of the first hill? Use PE = m × g × h, and assume that g = 9.8 m/sec2.

Physics
2 answers:
Lisa [10]3 years ago
7 0

Answer:

454,320 joules

Explanation:

The work done on an object is equal to its change in kinetic energy: Change in KE = F × d.

Plug the values for F and d into the formula and solve:

Change in KE = 2,524 × 180

= 454,320 joules

The roller coaster gains 454,320 joules of energy from the work done on it by the chain.

balu736 [363]3 years ago
4 0

Answer:850x9.8x50=416,500 joules at a height of 50 meters

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Answer:

The force applied to the surface is 9 kilo Newton.

Explanation:

While jumping on the surface the player applies the force that is equal to its weight on the surface.

The mass of the player is given as 90 kg.

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Force applied by the player = 90 × 9.8

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Expressing your answer to one significant figure, we get

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The force applied to the surface is 0.9 kilo Newton.

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3 years ago
Who can help me for this question plz:(
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A 2kg book is moved from a shelf that is 2m off the ground to a shelf that is 1.5m off the ground, what is it’s change in gravit
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3 years ago
The 1350-kg car has a velocity of 24 km/h up the 8-percent grade when the driver applies more power for 18 s to bring the car up
Brrunno [24]

Answer:

Explanation:

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Question 2:
Vesna [10]

Explanation:

There are many students who can not get answers step by step and on time

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