Question

8.
(1) 100 cm/s (2) 136.2 cm/s
131 300 cm/s
(4) 250 cm/s
The displacement x of a particle in time t is given by 10t2 - 4t - x = 0. Where x is in metre and tin
second. The distance covered by the body in 4th second of motion
(1) 31 m
(2) 39.5 m
(3) 66 m
(4) 75 m
Thonood​

Answer 1

Answer:

Since, t=4second given so

Put the value of t=4in the given equation and find that

The value of x=144

10*4*4-4*4-x=0

160-16-x=0

X=160-16

X=144

Explanation:

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