Question

9. a) A particle moves rectilinearly with uniform acceleration. Its velocity at time t = 0 is

1

v

and at time t = t is

2

v . Average velocity of the particle in this time interval is

1 2

2

V V

. Is

this statement true or false ? Substantiate your answer ?

b) A car travels the first third of a distance with a speed of 10 kmph, the second third at

20 kmph and the last third of 60 kmph. What is its mean speed over the entire distance ?​

Answer 1

Answer:

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