An object is pulled northward with a force of 10 n and southward with a force of 15 n. the magnitude of the net force on the object is: a. 0 n.
b. 5 n.
c. 10 n.
d. 15 n.

The consumption of fossil fuels could be

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)