A car speeds up from 5 m/s to 12 m/s in 20 seconds. What is the

acceleration of the car?

O

A. 29 m/s2

O

B. 0.35 m/s2

C. 2.1 m/s2

O D. 11 m/s2

O

O

Why does atmospheric pressure decrease with altitude? A. The weight of the atmosphere above decreases as altitude increases. B. The temperature of the atmosphere decreases. C. The temperature of the atmosphere increases. D.

You've always wondered about the acceleration of the elevators in the 101 story-tall empire state building. one day, while visiting new york, you take your bathroom scale into the elevator and stand on them. the scales read 130 lb as the door closes.

1 h 48 min expressed in seconds

A U-tube is filled with water until the liquid level is 28cm above the bottom of the tube. An oil of specific gravity 0.

On planet X, an object weighs 7.04 N. Onplanet B where the magnitude of the free-fallacceleration is 1.91g (whereg = 9.8 m/s2isthe gravitational acceleration on Earth), theobject weighs 25.74 N. The acceleration of gravity is 9.8 m/s2.

4) A satellite is in orbit around the earth. Which one feels the greater force? A) It depends on the distance of the satellite from Earth.

Meteoroids usually come from?

An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second star. Which of the following is a valid conclusion about the first star? It is larger than the second star.

Crane lifts a 1,052 kg car. What force in Newtons must the crane apply to the car to lift it?

Consider a circuit with a main wire that branches into two other wires. If the current is 10 A in the main wire and 4 A in one of the branches, how much current is in the other branch?