**Aim**

To investigate and observe the difference between

acceleration and velocity.

**Method**

1) Accurately measure a 100m distance.

2) Place markers at the start and at 10m intervals up to 100m.

3) A student with a stopwatch stands at each marker and records the time of the sprinter as he passes the marker.

**Results**

**Discussion**

1 Record the time, velocity, and acceleration for each

distance using the following formulas:

a Velocity = (distance covered)/(time)

b Acceleration = (change in velocity)/(time)

2 Draw a graph showing the velocity and acceleration over the 100m

3 At which point was velocity the lowest? Why?

4 At which point did the sprinter reach maximum velocity?

5Can you explain why it may have occurred at this distance?

6 Where did the sprinter reach maximum acceleration?

7Can you explain why it may have occurred at this distance?

8 Did the sprinter experience zero acceleration at any stage?

9 What does zero acceleration mean?

10 Did the sprinter experience negative acceleration at any stage?