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Non Uniform Motion & Avg Velocity

Q1.A car cove...

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Q1.A car covers a certain dis†an ce in two equal time intervals. The speed for first half of time is v1 and for second half of time is v2. The average speed car for the entire trip is

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Q. A body travels along a straight level road. For the first half time, its speed

v_{1}

and for the second half time

v_{2}

. What is the average speed ?What would be the average speed be if the first half distance covered with speed

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Q. A particle travelling in a straight path in the same direction covers the first half of the distance with a velocity

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and the second half of the distance with two different velocities

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Q. The correct match is:

List - I	List - II
a) A body covers first half of distance with a speed $V_{1}$ and second half of distance with a speed $V_{2}$	e) Average velocity is $\sqrt{\frac{g h}{2}}$
b) A body covers first half of the time with a speed $V_{1}$ and second half of the time with a speed $V_{2}$	f) Average speed is $\frac{v_{1} + v_{2}}{2}$
c) A body is projected vertically up from ground with certain velocity.Considering its total motion,	g) Average speed is $\frac{2 V_{1} V_{2}}{V_{1} + V_{2}}$
d) A body freely is released from a height h	h) Average velocity is zero

Q. A particle travelling in a straight path in the same direction covers the first half of the distance with a velocity

v_{1}

and the second half of the distance with two different velocities

v_{2}

v_{3}

in equal intervals of time. The average velocity of the particle for the entire journey is

Q. The average speed of a car which covers half the distance with a speed of

20 m / s

and other half with a speed of

30 m / s

in equal intervals of time is

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