Identify the type of force described (contact or noncontact):

The force that is exerted when a shopping cart is pushed:

The force that causes a metal ball to move toward a magnet:

A 13,000 N car starts at rest and rolls down a hill froma height of 10 m. It then moves across a level surfaceand collides with a light spring-loaded guardrail.

What do sound waves and infrared waves have in common, what makes them different

A 70 kg box is pulled by a 400 N force at an angle of 30° to the horizontal. The force of kinetic friction is 75 N.

Bacteria which are able to live in extreme conditions are found in this kingdom

What is the relationship between mass and linear momentum

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 56 rad/s.

The smallest units of matter that normally cannot be broken down are

What relationship exists between the amplitude of a wave and amount of disturbance in the water?

If the speed of the wave on the guitar string is 600 m/s. Determine the period of that wave. Show all of your work including the initial equations and include the units in your answer

A bumper car with a mass of 200 kilograms traveling at a velocity of 3.5 meters/second collides with a stationary bumper car with a mass of 250 kilograms. If the two bumper cars stick and move together at a velocity of 2.