SP1. MOTION Flashcards
(7 cards)
1
Q
what is the difference between Vector and scalar?
A
a vector has magnitude and direction
a scalar has just magnitude
2
Q
give examples of scalars and vectors
A
scalar: vector:
- speed - velocity
- mass - force
- distance - displacement
- time - acceleration
- energy - momentum
3
Q
what is the key equation in time graphs?
A
d
s = -
t
4
Q
what are newton’s 3 laws?
A
- an object has a constant velocity unless acted on by a resultant force.
- f =ma
- every action force has an equal and opposite reaction force.
5
Q
what is the equation for momentum and force?
A
momentum = mass x velocity
force = change in momentum / time
6
Q
what two factors add up to stopping distance?
A
thinking and braking distance
7
Q
what is the equation for work done?
A
force x displacement
