Kinematics: Vectors And Scalars

Question 1

Vector

Answer 1

A physical quantity that has both magnitude and direction

Question 2

Scalar

Answer 2

A physical quantity that only has magnitude

Question 3

Resultant vector

Answer 3

The single vector which has the same effect as all the original vectors acting together

Question 4

Distance

Answer 4

The length of path travelled

Question 5

Displacement

Answer 5

Change in position

Question 6

Speed

Answer 6

Rate of change of distance

Question 7

Velocity

Answer 7

Rate of change of position or rate of change of displacement

Question 8

Acceleration

Answer 8

Rate of change of velocity

Question 9

Instantaneous velocity

Answer 9

Is the velocity at a particular instant in time

Question 10

Position

Answer 10

position relative to a reference point

Question 11

Free fall

Answer 11

When the only force acting upon the object is gravitational force