Ticker tape: Acceleration of an object

Assalamualaikum wbt and have a good day everyone.


This entry is dedicated to my 4 Hibiscus students as a reference.


In Chapter 2: Force and Motion, you have learned to determine the acceleration of an object with a trolley run down an inclined runway.

In order to determine the acceleration. you must first determine the:

(i)   initial velocity, u
(ii)  final velocity, v
(ii)  Time taken for the trolley to accelerate

The key point in determining the velocity of the trolley is to understand the relationship between the parameter involved which are:

Knowing that displacement of the trolley is the length of the strip, how about time? read the notes here:

thus,

For 1 tick (time interval between two dots) is = 0.02 s

10 ticks = 0.2 s

Ticker tape obtained from the results of activity 2.1 in the textbook page 32 is analysed.

 Comments on students' work:

1. The length of each strip is not stated.
2. The time interval for 10 ticks is incorrect (It is 0.2 s NOT 0.02 s)
3. Final answer with correct S.I unit

Reference:
1. KSSM Physics Form Four Textbook, Sasbadi Publication.