2.1 Kinematics

Question 1

2.1.1 Define distance v displacement:

Answer 1

Distance is the total length between two points and is scalar.
Displacement is the distance of an object from a fixed point in a specified direction and is vector.

Question 2

2.1.1 Define speed v velocity:

Answer 2

Speed is the total distance travelled per unit of time and is scalar.
Velocity is the rate of change of displacement of an object and is vector.

Question 3

2.1.1 Define acceleration:

Answer 3

Acceleration is the rate of change of velocity of an object.

Question 4

2.1.3 What feature in a velocity-time graph shows the displacement?

Answer 4

The area under the velocity-time graph shows the displacement.

Question 5

2.1.4 What feature in a displacement-time graph shows the velocity?

Answer 5

The gradient of a displacement-time graph shows the velocity.

Question 6

2.1.5 What feature in a velocity-time graph shows the acceleration?

Answer 6

The gradient of a velocity-time graph shows the acceleration.