8/9- space, time and motion Flashcards
1
Q
What is Newton’s first law?
A
The momentum of a body will not change unless a force acts on it.
2
Q
What’s Newton’s second law?
A
When an external force acts on an object, this force is proportional to the rate of change of momentum.
3
Q
Define impulse.
A
The product of FΔt summed over the whole action of a force on an object resulting in a change in momentum.
4
Q
What’s Newton’s third law?
A
When an object exerts a force on another object, it exerts an equal and opposite force back.
5
Q
Define exponential change.
A
When the rate of change of a quantity is proportional to the value of the quantity.
6
Q
A
