Question

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

Answer 1

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

Answer 2

454,320 joules

Step-by-step 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.