2. Assume the height of the roller coaster (see fig) is y = 40 m (take the reference point, y = 0, as the bottom of the coaster hill). If the car starts from rest at point A, what is the speed of the car at the bottom of the hill? 3. What is the speed of the car when it reaches point B?

PICTURE IS BELOW ATTACHED

moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

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i just did this and got a 100.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

this is poiselle's equation from fluid mechanic in physics. mech eng