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Actigraphy measures movements and can also measure some basic sleep parameters such as sat and heart rate. The device can be worn for an extended period of time without the patient having to be at the lab. The data can then be downloaded to a computer and analyzed. 

The inertia of a body tends to cause the body to:

If a constant net torque is applied to an object, that object will

A 2-kg object is moving at 3m/s. A 4-N force is applied in the direction of motion and then removed after the object has traveled an additional 5m. The work done by this force is:

A bicycle wheel rotates uniformly through 2.0 revolutions in 4.0 s.  What is the average angular speed of the wheel?

If you chart that a patient is supine they are.

A constant 9.0-N net force acts for 2.0 s on a 6.0-kg object.  What is the object’s change of velocity?

A Ping-Pong ball moving east at a speed of 4 m/s, collides with a stationary bowling ball.  The Ping-Pong ball bounces back to the west, and the bowling ball moves very slowly to the east.  Which object experiences the greater magnitude impulse during the collision?

A 25-kg crate is pushed across a frictionless horizontal floor with a force of 20 N, directed 20◦below the horizontal. The acceleration of the crate is:

A flywheel of radius 25.0 cm is rotating at 655 rpm. Find its angular displacement ( in rad ) in 3.00 min.