Unit Test — Unit test Answers

A bucket of water experiencing a gravitational force of 525 N is pulled up from a water well. The net force in the y-direction is 45 N; therefore, the magnitude of the force of tension is N.

A box that has a mass of 80 kg slides down a ramp with a 30 degree angle. The free-body diagram shows the forces acting on the box.

Julie sits on a swing. Her free-body diagram is shown.The net force on Julie is N.

A rocket experiences a constant force even as the amount of fuel in its fuel tanks decreases. What happens to the acceleration of the rocket as it runs out of fuel?

Which describes a positive or negative net force acting on an object? Check all that apply.It can cause an object to accelerate.It can cause an object to stop moving.It can cause an object to start moving.It can cause an object to change directions.It can cause an object at rest to remain at rest.