How is average speed best defined?

A) distance traveled in a certain amount of time

B) the time it takes to travel a certain distance

C) instantaneous speed

D) velocity

How does changes in distance affect the gravitational pull between two objects? Describe and give one example.

What is one way space travel affects the human body?

A horse has an acceleration of 2 m/s2. If it starts from rest, how fast is it going after 1.7 seconds?

Which statement does NOT explain the concept of the Doppler Effect? A) As an observer approaches a stationary sound, the sound waves are compressed, making the pitch higher.

2. Which of the following is closest to 1 meter in length? A. a penny B. the width of a door C. the height of a room D. the size of the Earth.

A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 * 10³ kilograms. What is the amount of mechanical work done by the vehicle?

All forces are different each exerts a particular type of effect on an object

Witch statement about polymers is true

Two bullets have masses of 3,0 g and 6.0g, respectively. both are fired with a speed of 40.0 m/s. Which bullet has more kinetic energy? What is the ratio of their kinetic energies

What does it mean that a form of energy might take more energy to harness than it provides? Are renewable resources always renewable, or can they become non-renewable? Why aren't renewable resources used for everything that we use energy for?