Question

A man traveling in a straight line moves with a uniform velocity 3m/s for some time and with uniform velocity of 5 metre per second for next equal time interval of the average velocity of man in total time will be
(a) 3.5m/s.
(b) 4.5m/s.
(c) 4m/s.
(d) 3.1 m/s​

Answer 1

Answer:

a. 3.5 m/s

is the average velocity of man in total time will be

Answer 2

Answer:

The average velocity of man in total time will be 4m/s.

Therefore, option (c) is correct.

Explanation:

Given, a man is travelling in a straight line,

The velocity of man in the first interval, v₁ = 3m/s

The velocity of man in the next interval, v₂ = 5m/s

Average velocity of the object is the rate at which an object makes displacements with time. The SI unit of average velocity is m/s, same as speed.

The average velocity of man is given by:

$\big v=\frac{\big v_\big 1 \big +\big v_\big 2}{\big 2}$

Substitute the value of 'v₁' and 'v₂' in the above equation;

$v=\frac{3+5}{2}$

$v=\frac{8}{2}$

$v=4m/s$

Therefore, the average velocity of man in total time will be 4m/s.

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