Force

Question 1

What is a scalar quantity?

Answer 1

A scalar quantity is a quantity with only magnitude (size)

Question 2

What is a vector quantity?

Answer 2

A vector quantity is a quantity with both magnitude (size) and direction

Question 3

Examples of scalar quantities…

Answer 3

Examples of scalar quantities include mass, temperature, speed, energy, distance, time

Question 4

Examples of vector quantities…

Answer 4

Examples of vector quantities include displacement, force, weight, velocity, acceleration, momentum

Question 5

What is a contact force?

Answer 5

A contact force is when objects are physically touching

Question 6

What is a non-contact force?

Answer 6

A non-contact force is when objects are physically separated

Question 7

Examples of contact force…

Answer 7

Examples of contact forces include friction, tension, air resistance

Question 8

Examples of non-contact force…

Answer 8

Examples of non-contact force include gravitational force, electrostatic force, magnetic force

Question 9

How do you work out the weight of an object?

Answer 9

Weight of an object = mass x gravitational field strength

Question 10

What is the centre of mass?

Answer 10

Centre of mass is the point of which an object is thought to be concentrated