A girl runs up the down escalator in the mall. If the escalator is moving with a

velocity of 24 m/min and the girl is running with a velocity of 30 m/min, how far up the escalator can she go in 4 minutes?

A. 10 m

B. 30 m

C. 48 m

D. 24 m

Number of valence electrons for calcium?

How does a seat belt counteract Newton's law

Circular motion occurs on earth true or false

A 2 kg bowling bowl is 1 meter off the ground on a post when it falls. just before it reaches the ground, it is travelling 4.4 m/s. Assuming there is no air resistance, which of the following statements is true 1.

In order for the force to be IN what would the distance for these objects have to be? 13m A ...001m B ...001mm Cr 1.35x1011m D. 1.16x107m 30Kg 500Kg

Why do people use Earth's motions to determine units of time?

Which of the following could be described as "Energy cannot be created or destroyed, only converted into other forms"? A. Rebound-crumple theorem B. Impulse-momentum theorem C. Law of conservation of energy D. Law of conservation of momentum

Which one of the following statements is true? 1. Burning coal contributes to sulfur aerosols in the stratosphere; these sulfur aerosols have moderated global warming. 2.

A diver on a diving board is undergoing simple harmonic motion. Her mass is 55.0 kg and the period of her motion is 0.800 s. The next diver is a male whose period of simple harmonic oscillation is 1.05 s.

Who was the last person to step on the moon?