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A cyclist is riding on a country road, down a huge hill into the holler. Which is true of the cyclist’s potential energy?

With a force F acting on a mass, acting over time interval t, and over a displacement magnitude d in the direction of the force, the change in an object’s momentum is:

If an airplane manufacturer doubles the area of each window in a model, which describes the effect of the force on a window from air pressure?

A 5kg and a 10kg are free-falling near the Earth’s surface, with the Earth’s gravitational force the only force acting.  Which is true?

A ball initially has velocity in the positive direction.  It is struck by a bat, and reverses direction with the same speed.  Which is true of the CHANGE in the ball’s momentum over the interval it is struck by the bat? 

The atomic mass of a He atom is 4.  What is the mass of 3 x 10^23 atoms of such atoms in kg?

Which most closely describes refraction?

An hypothetical atom has atomic number 2 and atomic mass 2.  How many neutrons does it have?

2020 Hyundai Accent from second gear accelerates at a = 12 m/s2, speeding up while traveling along a straight line.  If the initial speed is 8 m/s, what is the speed after after 2.5 seconds?

Convert 1300 feet to miles (1 mile = 5280 feet).