Paper 1

Question 1

Define vector and scalar quantities

Answer 1

Vector: both magnitude (size) and direction

Scalar: no direction, only magnitude

Question 2

Name some vector quantities

Answer 2

Force, velocity, displacement, weight, acceleration and momentum

Question 3

Name some scalar quantities

Answer 3

Speed, distance, mass, energy, temperature and time

Question 4

What is displacement

Answer 4

A vector quantity and it measures the distance and direction in a straight line from an objects starting point to its finishing point

Question 5

Define speed and velocity

Answer 5

Speed: how fast you are going with no regard to the direction

Velocity: speed in a given direction

This means you can have objects travelling at a constant speed with a changing velocity. This happens when the object is changing direction whilst staying at the same speed

Question 6

What is uniform acceleration

Answer 6

Speeding up or slowing down at a constant rate. Acceleration due to gravity is uniform for objects to free fall and roughly equal to 10m/s2

Vsquared -u squared = 2 x a x x

Question 7

Define acceleration

Answer 7

The change in velocity in a certain amount of time