Physics

Question 1

conservation of energy

Answer 1

energy cannot be created or destroyed; it can be transformed from one form into another but the total amount of energy is always the same

Question 2

conservation of momentum

Answer 2

in the absence of external forces, the momentum of a system is conserved; it never changes

Question 3

force

Answer 3

any push or pull on an object

Question 4

Newton’s First Law of Motion

Answer 4

every object at rest will remain at rest, and any object in motion will remain in motion in a straight line at a constant speed unless it is acted upon by an outside force that changes that state

Question 5

Newton’s Second Law of Motion

Answer 5

the acceleration produced by a force on an object is directly proportional to size of the force, is in the same direction as the force, and is inversely proportional to the mass of the object