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CBSE Class 9 Answered

A bus moving along a straight line at 20 m s to the power of minus 1 end exponent undergoes an accelaration of 4 m s to the power of minus 2 end exponent.What will be its speed after 2 seconds? 
Asked by deeptisingh25 | 29 Jun, 2014, 03:36: PM
answered-by-expert Expert Answer

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

To find the distance travelled,

v2 = u2 + 2 a s

(28)2 = (20)2 + 2 x 4 x s

784 = 400 + 8 s

784 - 400 = 8 s

8 s = 384

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

s=48 m

Calculating speed travelled after 2 seconds.

Syntax error from line 1 column 49 to line 1 column 73. Unexpected '<mstyle '.

              = 24 m/s

Answered by Faiza Lambe | 30 Jun, 2014, 11:44: AM

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