How is the speed trap gun used to measure speed?

The acceleration produced by a net force on an object is

What is electricity? Why does it happen?

A 905 kg test car travels around a 3.25 km circular track. If the magnitude of the centripetal force is 2140 N, what is the car's speed?

Como se relaciona aceleracao centripeta com o raio? como seria em grafico?

The total mechanical energy of a system: A) can never be negative. B) is constant, if only conservative forces act. C) is either all kinetic energy or all potential energy, at any one instant.

A physics student is riding on a train traveling north. Having read about inertia, the student performs an experiment with a golf ball. He reaches over the aisle and drops the ball from rest.

What do orbiting satellites and the orbit of the moon around the Earth have in common? A. Parallel-force motion B. Central-force motion C. Velocity D. Friction

Which air mass provides the moisture that produces the clouds and precipitation?

What is a relatively small rocky body that travels through out space

Which is true about the pressure of a fluid at a specific depth? It varies with the total volume of the fluid. It depends only on the type of fluid. It is exerted only in the downward direction. It depends on the surface area of the fluid.