Question

The motion of particle is described by the equation x
= a + bt?, where a = 15 cm and b = 3 cm/sec?. Its
instant velocity at time 3 sec will be
(1) 36 cm/sec (2) 9 cm/sec
(3)4.5 cm/sec (4) 18 cm/sec​

Answer 1

Answer:

18 cm/sec

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