1
Q
Define linear motion.
A
Motion in straight/curved line with all parts moving same distance, speed, direction.
2
Q
Difference between scalar and vector quantities?
A
Scalar = magnitude only; vector = magnitude + direction.
3
Q
Define displacement.
A
Straight-line distance from start to finish with direction.
4
Q
Speed vs velocity?
A
Speed = rate of movement; velocity = speed with direction.
5
Q
Acceleration formula?
A
(Final velocity - initial velocity) ÷ time.
6
Q
define momentum.
A
Mass × velocity; vector quantity.
7
Q
What is impulse?
A
Force × time; changes momentum.
PE paper 2
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