What is the approximate weight of a 20-kg cannonball on earth?

a. 2 n

b. 20 n

c. 200 n

d. 2000 n?

Two buses leave school moving in opposite direction after 15 minutes they are both 10 miles away from school which statements correctly describe the motion of the buses?

A milliliter of very hot water is added to a liter of very cold water. Which of these events will occur? Assume the surrounding air is at room temperature. a. The cold water will warm to room temperature. b. The hot water will cool down. c.

About how fast is the speed of sound in air

A runner makes one lap around a 200m track of 25 s. What were the runner's (a) average speed and (b) average velocity?

The dominant wavelength of energy emitted by the sun is

What characteristic of a planet determines the acceleration due to gravity on it?

Which set of terms best defines what affects kinetic energy and potential energy, respectively? position, gravity gravity, position velocity, height height, velocity

You are operating a powerboat at night. You see green and white lights on another boat. What should you do?

How does Newton's second law apply to an "Egg Drop" experiment?

A 4.0-n puck is traveling at 3.0 m/s. it strikes an 8.0-n puck, which is stationary. the two pucks stick together. their common final speed is: