Forces

Question 1

Scalars

Answer 1

Quantities that only have a magnitude (size)

Question 2

Vectors

Answer 2

Quantities that have both magnitude and direction

Question 3

Mass

Answer 3

The amount of matter that makes up an object

Question 4

Weight

Answer 4

The force of gravity on an object due to its mass

Question 5

What is weight measured in?

Answer 5

Newtons (N)

Question 6

Center of mass

Answer 6

The weight of an object that is considered to act at a single point

Question 7

Formula for weight

Answer 7

Weight (N) = mass (kg) x gravitational field strength (N/kg)
W=mg

Question 8

Newton’s third law

Answer 8

When two objects interact, the forces they exert on each other are equal and opposite.

Question 9

Newton’s first law

Answer 9

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Question 10

Newton’s second law

Answer 10

The acceleration of an object is directly proportional to the net force and inversely proportional to its mass. F = m x a