Newton's Laws

Question 1

What is mass?

Answer 1

Mass is the amount of matter in an object (kg)

Question 2

What is weight?

Answer 2

Weight is the force of gravity on your mass

Question 3

What is gravity?

Answer 3

Gravity is the force that attracts mass together

Question 4

What is the equation that links mass and weight?

Answer 4

Weight=mass x gravitational field strength

Question 5

What is the gravitational field strength on Earth?

Answer 5

10N/kg

Question 6

What is inertia?

Answer 6

Inertia is a resistance to the change in motion

Question 7

State Newton’s first law

Answer 7

An object will remain at rest or in uniform motion unless acted on by a resultant force

Question 8

Newton’s second law is about resultant force.

What is the equation for resultant force?

Answer 8

Resultant force= mass x acceleration

(N) (kg) (m/s2)

Question 9

What is terminal velocity?

Answer 9

The maximum speed of an object, reached when the forces moving the object are balanced by its frictional forces

Question 10

What is air resistance and how does it occur?

Answer 10

Moving through the air causes collisions with air molecules. There is friction between the moving body and the particles, which causes you to slow down.
This is air resistance

Question 11

What is Newton’s third law?

Answer 11

If body A exerts a force on body B, body B exerts an equal and opposite force on body A