(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Rollercoaster cart (55kg) travelling at a velocity of 5m/s reaches position at top of a rollercoaster hill, 5m high.

1. assuming no friction, what would the speed of the cart be at the bottom of the track?

2. at the bottom, the speedometer of the cart displays a speed of 10m/s. What does this suggest about the energy transformation that has occurred as the cart went down the slope?

3. what is the energy efficiency of the cart as it goes down the slope?

2. Relevant equations

3. The attempt at a solution

already calculated

gravitational potential energy: GPE = m*g*h = 2695

kinetic energy: KE = 1/2*m*v^2 = 687.5

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# Rollercoaster physics

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