A 30.0kg girl rides her bike in a circular path. She peddles at 5.00 m/s and experiences a net centripetal force of 80.0N. What is the radius of the path she is peddling around?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?