Newton’s laws

Question 1

Mass

Answer 1

The amount of matter that makes up an object

Kg

Question 2

Weight

Answer 2

The downwards force acting on an object (caused by gravity)

Newtons

W=mg

Question 3

Gravitational Field strength

Answer 3

The amount of force exerted on an object by a gravitational field

Nkg^-1

Question 4

Balanced forces

Answer 4

Then the forces acting on the object are: -equal in size
-opposite in direction

Question 5

Unbalanced forces

Answer 5

Then the forces acting on an object are: -not equal in size
-Resultant force is worked out by subtracting one from the other

Question 6

Newton’s first law of motion

Answer 6

An object will remain at rest, or continue to move at a constant velocity, unless acted upon by an unbalanced force

Question 7

Newton’s second law

Answer 7

If an object has unbalanced forces then it will accelerate in the direction of the resultant force
(Depends on the resultant force and mass of the object)
F=ma

Question 8

Freefall

Answer 8

When the only force acting upon you is weight

Question 9

When is terminal velocity reached?

Answer 9

When air resistance balances weight

Question 10

Newton’s third law

Answer 10

Every action (force) has an equal and opposite reaction (force)