A car travels 300 meters in 15 seconds. What is

the average velocity of the car?

A.

5.0 m/sec

B.

15 m/sec

C.

20 m/sec

D. 30 m/sec

Are we the same age as the universe because matter cannot be created nor destroyed

According to the law of conservation of energy, when a lawnmower uses 750 J of chemical energy from gasoline, how much of this energy will be transformed into mechanical, sound, or heat energy?

A proton is moving toward a stationary charged particle. Which statement correctly describes an energy change that could occur as the particles get closer? A.

A 2,537-kg truck moving at 14 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 8 m/s. What was the mass (in kg) of the struck car

A car traveling at 25 m/s starts to decelerate steadily. It comes to a complete stop in 10 seconds. What is Its acceleration?

What kind of movement does the heat within the core and mantle directly generate?

Explain why Newton's first law of motion can be difficult to observe in moving objects?

No force is necessary to

A boat has a mass of 4040 kg. Its engines generate a drive force of 4660 N due west, while the wind exerts a force of 880 N due east and the water exerts a resistive force of 1400 N due east. Take west to be the positive direction.

Define the word projectile