A particle moves along the straight-line OX, starting from O with a velocity 4 cm/sec. At time t seconds its acceleration is (5 + 6t) cm/sec2. What will be the velocity of the particle from O after 4 seconds?

A particle moves along the straight-line OX, starting from O with a ve

1.	A particle moves along the straight-line OX, starting from O with a velocity 4 cm/sec. At time t seconds its acceleration is (5 + 6t) cm/sec2. What will be the velocity of the particle from O after 4 seconds?
A.	70 cm/sec
B.	71 cm/sec
C.	72 cm/sec
D.	73 cm/sec
Answer» D.

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