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The speed of a body moving on a straight...

The speed of a body moving on a straight track varies according to `v = 2 t + 13 " for " 0 le t le 5 s, v = 3 t + 8 " for " 5 lt t lt 7s` and `v = 4 t + 1 " for " t gt 7s`. The distance are measured in metre. The distance in metres moved by the particle at the end of 10 second is :

A

127

B

247

C

186

D

313

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The correct Answer is:
B
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MOTION-KINEMATICS-EXERCISE 1 OBJECTIVE PROBLEMS
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