P2.2.4 - Newton's Second Law

Question 1

What is Newton’s Second Law?

Answer 1

‘’The acceleration experienced by a body is directly proportional to the resultant force acting upon it, and in the same direction as’’

Question 2

What is the relationship between acceleration and mass?

Answer 2

Acceleration is inversely proportional to mass

Question 3

What is the equation linking force, mass and acceleration?

Answer 3

Force = mass x acceleration

Question 4

If a body is travelling at constant speed, in a constant direction is it accelerating or not?

Answer 4

It is not accelerating

Question 5

If a body is travelling at a constant speed, with a changing direction is it accelerating or not?

Answer 5

It is accelerating

Question 6

If a body is travelling at a changing speed, with a constant direction is it accelerating or not?

Answer 6

It is accelerating

Question 7

If a body is travelling at a changing speed, with a changing direction is it accelerating or not?

Answer 7

It is accelerating

Question 8

If a body is moving in a circle at constant speed then…

Answer 8

• It is constantly changing direction
• Thus, it is constantly chasing velocity
• Thus, it us constantly accelerating and so must be subject to a resultant force