How do astronomers use rocks from the moon to estimate the age of the solar system?

John lifted a box off the floor using 11 Newtons, how much work did he do

Why do objects heat up?

A physical change occurs when a material changes shape or size but the composition of the material does not change. True or False?

Wind, moving water, sunlight, and heat from earth's interior are sources of

What color are cosmic rays?

What is the force required to accelerate a baseball with a mass of 0.145 kilograms and an acceleration of 35.00 meters/second squared?

A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

If the speed of a vehicle was reduced from 65 miles per hour to 35 miles per hour, by approximately how many kilometers per hour was the speed reduced? (1 kilometer = 0.62 mile, rounded to the nearest 0.01 mile)

What is the acceleration rate of an object if the amount of force applied on the object is 75 Newtons and the object has a mass of 15 kilogram?

Two children pulling the rope with the same force in opposite direction is that an unbalanced force or a balanced force