What do fixed pulleys always do?

Which of the following is the SI unit used to measure temperature? a. kilogram b. liter c. meter d. Kelvin

The magnitude of a velocity vector is called speed. suppose that a wind is blowing from the direction n45°w at a speed of 40 km/h. (this means that the direction from which the wind blows is 45° west of the northerly direction.

In order to rendezvous with an asteroid passing close to the earth, a spacecraft must be moving at 8.50*103m/s relative to the earth at a distance 2.50*108m from the center of the earth.

Is the acceleration due to gravity more or less atop mt. everest than at sea level? defend your answer?

If a force of 22 N is applied to an object with a mass of 6 kg, the object will accelerate at

There are four people in the car, the driver slams on the gas pedal and all the passengers heads hit the headrest behind them when the car accelerates forward.

A car travels 15 miles in 30 minutes. Calculate its average speed.

What two factors affect the strength of a gravitational attraction? How does each effect the strength

A spring is stretched 2 cm when a mass of 40 grams is hung from it what is the spring constant of the spring

Can a red nova hurt earth?