A worker applies force to a wheeled cart on a level floor. The cart moves at a constant velocity as long as the worker continues to apply force. What conclusion can be reached about friction between the cart and the floor? A
It is zero as long as the cart is moving at a constant velocity.

B
It is positive until the cart is in motion, but is zero when the cart is in motion.

C
It is equal in magnitude to the worker’s force, but opposite in direction.

D
It is equal in magnitude to the worker’s force, and has the same direction.

If we relied solely on the nonrenewable resources found in the u.s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal

Which bonds are found inside a water molecule

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?