A 38.5 kg man is in an elevator accelerating downward. A normal
force of 343 N pushes up on him.
What is his acceleration?
[?] m/s2

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)