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please answer this

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Asked by Prashant DIGHE 22nd April 2020, 10:54 PM
Answered by Expert
Answer:
A particle moves with constant acceleration.
We know,
At the end of 10th second the velocity of particle becomes 20 m/s
v = u + at 
 
20 = u + a×10 ....(1)
 
Displacement taking place in nth second is given by,
sn  = u + a/2 (2n-1)
10 = u + a/2 (2×10-1)
10 = u + 9.5 a ... (2)
 
Solving (1) and (2) we get,
 
10 = 0.5 a 
 
Thus,
a = 20 m/s2 
 
Hence, the acceleration or particle will be 20 m/s2 
 
 
Answered by Expert 23rd April 2020, 1:53 AM
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