A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car's average acceleration? A. 0.17 m/s2 B. 1.67 m/s2 C. 6 m/s2 D. 7 m/s2 E. none of the above

Batteries have potential energy in their energy stores. What one word completes the sentence?

He mass of Mars is 6.42 * 1023 kg. Its moon Phobos is 9378 kilometers away from Mars and has a mass of 1.06 * 1016 kg. What is the gravitational force between Mars and Phobos? 5.16 * 1015 N 5.16 * 1021 N 4.84 * 1022 N 4.84 * 1025 N

You raise a penny for each meter you walk in a fundraiser. You walk 15 kilometers. How much money do you raise?

What are the four basic functions of a modern computer? (Should this even be phyisics?)

Which of the following would you need to measure, not because they are a direct measurement of how well something is being dissolved, but because they are relevant factors into how quickly something dissolves? A. The temperature of the water B.

Winston stands on the edge of a building's flat roof, 12 m above the ground, and throws a 147.0-g baseball straight down. the ball hits the ground at a speed of 18 m/s. what was the initial speed of the ball?

When is the zebra in motion when it is not moving

1) What happens when two negatively charged tape strips are placed near each other?

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

What causes an air conditioned to turn on