Forces and movement Flashcards
1
Q
What is meant by a vector quantity
A
It measures both magnitude and direction
1
Q
What is meant by a scalar quantity
A
It measures just magnitude
2
Q
Principle of conservation of Momentum
A
-The total momentum before the collision is equal to the total momentum after the collision
3
Q
Why is an egg less likely to break when dropped on thick carpet instead of hard tiles
A
-Force = Change in Momentum / Time
-The impact time is increased by carpet
-Therefore less force is exerted on the egg
4
Q
What is Newton’s Third Law?
A
When two objects interact, they exert equal and opposite forces on each other.
5
Q
Name a device to measure force
A
Newtonmeter
