Why are scientific models useful

A car with a mass of 1,500 kg requires a centripetal force of 640 N to safely follow a circular curve in the road at 13.4 m/s. What is the radius of the curve?

Somebody shoots a ball. what represents the force of leg

Write newtone first law

If a 20kg object is moved across the floor and the coefficient of friction is 0.255. What is the frictional force?

On a small planet, an astronaut uses a vertical force of 175 newton to lift an 87.5 kg boulder at constant velocity to height of 0.350 meter above the planet's surface.

An ecosystem is all the populations of organisms that live together and A. the microorganisms that depend on them. B. the organisms that generate energy from sunlight. C. the physical factors with which they interact. D.

Which statement about magnetic poles is accurate? A) Same magnetic poles attract, while different magnetic poles repel. B) Same magnetic poles attract, while different magnetic poles attract.

Power is measured in: A) J/s B) J2/s C) s/J D) s2/J

The amount or the strength of force is called its

An airplane in flight has a pressure difference between the lower and upper wing surface; this provides an upward force that balances the weight of the plane.