Newton's Laws

Question 1

Weight Fg

Answer 1

The gravitational force the Earth exerts on any object on or near its surface.

Question 2

Normal force FN

Answer 2

The perpendicular force exerted by a surface on an object in contact with it.

Question 3

Frictional force Ff

Answer 3

The force that opposes the motion of an object and acts parallel to the surface with which the object is in contact.

Question 4

Newton’s 1st law

Answer 4

An object continues in a state of rest or uniform (moving with constant ) velocity unless it is acted upon by a net or resultant force.

Question 5

Inertia

Answer 5

The property of an object that causes it to resist a change in its state of rest or uniform motion.

Question 6

Newton’s 2nd law

Answer 6

When a net force, Fnet , is applied to an object of mass , m, it accelerates in the direction of the net force. The acceleration,a, is directly proportional to the net force and inversely proportional to the mass.

Question 7

Newton’s 3rd law

Answer 7

When object A exerts a force on object B ,object B simultaneously exerts an oppositely directed force of equal magnitude on object A.