Finding Velocity
Velocity of a motion can be determined by using ticker tape through the following equation:

Caution!:
t is time taken from the first dot to the last dot of the distance measured.

**Example**:

Diagram above shows a strip of ticker tape that was pulled through a ticker tape timer that vibrated at 50 times a second. What is the

a. time taken from the first dot to the last dot?

b. average velocity of the object that is represented by the ticker tape?

**Answer**:

a. There are 15 ticks from the first dot to the last dot, hence

Time taken = 15 × 0.02s = 0.3s

b. Distance travelled = 15cm

$$v=\frac{s}{t}=\frac{15}{0.3}=50cm{s}^{-1}$$

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Finding Velocity from Ticker Tape