Newtons first and second laws

Question 1

What is Newtons first law?

Answer 1

Resultant force is needed to make something start moving, speed up or slow down

Question 2

What happens if the force on an stationary object is zero

Answer 2

The object will remain stationary

Question 3

What happens if the force on an moving object is zero

Answer 3

It’ll carry on moving at same velocity

Question 4

So for example if a vehicle like a car was driving at constant velocity how would Newtons law apply?

Answer 4

The resistive ,driving forces must all be balanced
Velocity will only change if there’s a non - zero resultant force acting on object

1) a non - zero resultant force will always produce an acceleration in the direction of force
2) This acceleration will take 5 different form, starting, stopping, speeding up, slowing down , changing direction
3) on free body diagram , the arrows will be unequal