Question

A body is moving in a straight line along x-axis. Its distance from the origin is given by the equation x=at? - bt", where x is in metre and t is in second a=8 and b=5. Find(i)the average speed of the body in the interval t = 0 and t = 2 and (ii)its instantaneous speed at t=2s.​

Answer 1

Answer:

ANSWER

Average speed is given by,

v

ˉ

=

change in time

change in distance

=

t

2

−t

1

y

2

−y

1

=

1−0

(8×1−3×1

2

)−0

=5 ms

−1

Step-by-step explanation:

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