Newton’s Laws

Question 1

Newtons First Law:

Answer 1

If the resultant force on a stationary object is zero, the object will remain stationary.
If the resultant force on a moving object is zero, it’ll just carry on moving at the same velocity (same speed and direction).

Question 2

Conclusion from Newtons’s first law

Answer 2

Hence…
-> a non-zero resultant force always leads to acceleration
-> there are 5 types of this acceleration- starting, stopping, speeding up, slowing down and changing direction

Question 3

Newton’s 2nd Law

Answer 3

The larger the resultant force, the larger the acceleration. They are directly proportional.

Question 4

Draw a graph to show Newton’s second law

Answer 4

N/a

Question 5

Does acceleration increase with mass?

Answer 5

No, the larger the mass, the smaller the acceleration. They are inversely proportional.

Question 6

Formula to describe Newton’s 2nd law:

Answer 6

F = m x a

F = resultant force (N)
m = mass (kg)
a = acceleration (m/s^2)

Question 7

Newton’s 3rd law

Answer 7

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