If an object has 100 joules of potential energy (PE) at the top of a ramp, how much kinetic energy (KE) will there be at the other two locations indicated, half-way down the ramp and at the bottom the ramp?

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i just did this and got a 100.

current flows in a wire

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.