Q4) A car acquires a velocity of 20m/s in 10 s from rest.
Calculate (i) acceleration (ii) average velocity (iii) distance travelled.
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Explanation:
initial velocity,u=0
final velocity,v=20
timetaken,t=10s
total displacement will be initial it will be zero as the body is at rest
velocity =displacement/time
20=d/10
200=d
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Answer:
(i) 2 m/s^2 (ii) 20m/s (iii) 200m
Explanation:
(i) Acceleration(a)= Change in velocity/Time
= (v-u)/t
= (20-0)/10
= 20/10
= 2 m/s^2
(iii) Distance,
20m covered in 1s
200m covered in 10s
(ii)Avg. Velocity= Distance/Time
= 200/10
= 20 m/s
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