Question

a pupil uses a ticker-timer to investigate the movement of a trolley. every second, the ticker-timer puts 60 dots on the piece of tape. what length of time corresponds to the distance between x and y on the tape? (a) 0.10 gb) 0.11 s (c) 0.17 and) 0.18 s

Answer 1

To calculate the time interval between two points x and y on a ticker tape, count the number of dot spaces between them and divide by 60 since the ticker-timer marks 60 dots per second.

This correct answer is (c)

Step-by-step explanation:

The question requires calculation of the time interval that corresponds to the distance between two points (x and y) on a ticker tape produced by a ticker-timer.

The ticker-timer marks 60 dots per second on the tape. To calculate this time interval, you need to count the number of dot spaces between points x and y. Let's say there are n dot spaces between x and y on the tape.

Since one dot is produced every 1/60th of a second, the time interval (t) is n times 1/60th of a second. Therefore, t = n/60 seconds.

For example, if there are 10 dot spaces between x and y, the time interval would be 10/60 seconds, or 0.17 seconds, which corresponds to option (c).

This correct answer is (c)