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CBSE Class 9 Answered

a car is moving with the acceleration 2m/s from rest find the distance traveled by the car in 10th second
Asked by syedmehdiali543 | 17 Apr, 2022, 04:01: PM
Expert Answer
Distance travelled in 10th second means , distance travelled from t=10 s to t=11 s
 
velocity at t = 10 s is determined from equation of motion " v = u + a t " , where u initial velocity ,
v is velocity after t seconds and a is acceleration
 
Since car starts from rest , u = 0
 
Hence velocity at t = 10 s is given as
 
v = 2 × 10 = 20 m/s
 
Distance travelled in 10th second = u t + (1/2) a t2 = ( 20 × 1 ) + [ (1/2) × 2 × 12 ] = 21 m
Answered by Thiyagarajan K | 17 Apr, 2022, 09:33: PM
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