Which best describes a force?

List and describe the four phases of matter. Give a common example of each.

A car has a mass of 900 kilograms and has a force of 4500 to the left what is the acceleration

The driver of a car moving with a constant speed applys the brakes and the car comes to a stop after 3.5 meters. Which force causes the deceleration of the car?

Mass can be measured in which of the following? A. grams Bmeters C. liters D. both A. and B

What is the velocity of an object that has been in free fall for 0.10 s?

Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sad ball strikes a sad ball and the happy ball strikes a happy ball.

Under what conditions will an object experience a gravitational force? Under what conditions will an object experience an electric force? Under what conditions will an object experience a magnetic force?

A basketball player pushes down with a force of 34 N on a basketball that is inflated to a gauge pressure of 9 x 104 Pa. What is the diameter of contact between the ball! and the floor?

Match these terms with their definitions: 1. unit of electrical resistance ampere 2. unit of electromotive force or electrical potential ohm 3. unit for measuring the strength of an electric current volt 4. unit of electrical power watt

In which is momentum conserved: an elastic collision or an inelastic collision?