Ch9 Force, mass, momentum

Question 1

DEFINE force

Answer 1

Anything that causes the velocity of an object to change

Question 2

What is the relationship between Force and Acceleration?

Answer 2

F ∝ A

Question 3

DEFINE weight

Answer 3

The force of the Earth’s gravity acting on an object

Question 4

DEFINE: State Newton’s First Law of Motion

Answer 4

Every body will remain in a state of rest or travelling at constant velocity unless an unbalanced external force acts on it

Question 5

DEFINE: State Newton’s Second Law of Motion

Answer 5

If an unbalanced external force acts on a body,
the rate of change of the body’s momentum will be directly proportional to the force and take place in the direction of the force