Question

TIME (s)
VELOCITY OF A (m/s) VELOCITY OF B(m/s) VELOCITY OF C (m/s)
10
10
25
30
20
15
40
25
30
20
55
20
40
25
70
15
Answer the following questions using above information
Which object A, B or C has highest acceleration? Give reason
ii) Calculate acceleration of all the three objects.
iii) How can you identify the case of retardation without calculating acceleration?
iv) What is the sum of distance travelled by all the three objects?​

Answer 1

Answer:

Correct option is

C

from t = 10 s to t = 15 s; 20 m/s

According to above graph we conclude that the body has uniform motion from t=10 s to t=15 s in part 'bc'. Velocity is constant and is equal to 20ms

−1

during this interval.