True or False:

The force needed to change motion of an object rolling over a surface is less than that of an object sliding on a surface.

Two different objects are moving with different velocities until they strike each other, stick to each other, and begin moving together.

A tennis player who is recovering from an ankle injury and is not allowed to change directions can maintain her cardio fitness level by

A simple motor converts

A cylindrical rod has equal and opposite forces applied perpendicular to its circular ends. the forces are directed away from the rod, stretching the rod. what type of stress is this rod subject to?

Water enters a house through a pipe with an inside diameter of 2.0cm at an absolute pressure 4.0*10^5 pascal. A 1.0-cm-diameter pipe leads to the second floor bathroom 5.0m above. when the flow speed at the inlet pipe is 1.5m/s.

Which figure shows a correct pattern of electric field lines? A. figure A B. figure B C. figure C D. figure D

A stone is thrown vertically upward with a speed of 24.0 ms. (a) How fast is it moving when it reaches a height of 13.0 m? (b) How much time is required to reach this height?

3 forces that you exert when riding a bike

The function carrying wire wrapped around an iron ore is called

A car of mass 1200 kg traveling westward at 30. m/s is slowed to a stop in a distance of 50. m by the car's brakes. What was the braking force? Select one: A. 1,800,000 N B. 0.80 N C. 11,000 N D. 2000 N