A person began running due east and covered 15 km in 2.0 hr. What is the average velocity of the person?

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What characteristic of ice distinguishes it from other solid substances?

2) Why do satelites not Fall while revolving around the earth?

Think back to when you were a kid riding in the backseat of the car. Maybe you once had a milkshake in your hand when your mom hit the brakes. You were secured by your seat belt, but you forward and the milkshake splashed all over the front seat ...

0.30 s after seeing a puff of smoke rise from the starter pistol the sound of the firing of the pistol is heard by the track time by a 100m away. What is the speed of sound

Calculate the potential energy of 5kg object sitting on a 3m ledge.

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.

What wave-like property of light causes it to bend when encountering an opening? A. Reflection B. all the above c. Refraction d. none of the above e. diffraction

Which of the following statements describe sliding friction? Select all that apply. 1.) a force that causes an object to increase speed 2.) a force in which one of the objects involved must be a liquid or a gas 3.

What do a broken rode and a volcano eruption have in common

What is the input of energy for a device that provides 50 units of useful energy and has an efficiency of 0.55?