1. A 24 kg rock is resting on the floor. How much potential energy does it have? Explain.

Is it possible for an object's weight to change while its mass remains constant? Explain

A 5 kg ball approaches a wall at a speed of 4 m/s. It then bounces off the wall in the opposite direction at the same speed. What is the magnitude of the average force exerted on the ball if it is in contact with the wall for 0.1 s?

How do you think scientists figure out what they think the population will be in 2050?

Describe the physical interpretation of a temperature of absolute zero

How do you solve for b? A=1/2h (b+c)

B. how does the separation between galaxies compare to the separation between stars? based on your answer, discuss the likelihood of galactic collisions in comparison to the likelihood of stellar collisions.

Period vs string length String length (cm) 100cm, 75cm, 50cm, 25cm Each one below matches the strength length above time 10 periods (s) - trial 1 time for 10 periods (s) - trial 2 time for 10 periods (s) - trial 3

How could you determine the instantaneous speed during a trip?

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container. In what phase of matter are the molecules in the container?

What do we call the region around a magnet where it exerts its magnetic force?