## Finding Velocity from Ticker Tape

Posted by Sek | 8:49 PM | , | 1 comments »

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 1

Diagram 2.4 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?

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