NEET UG PHYSICS MCQ: MOTION IN A STRAIGHT LINE

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Two stones are falling at a place from heights in the ratio 2 : 3. Their velocities on reaching the ground are in the ratio

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Correct option: C

\sqrt 2 :\sqrt 3

Option C (

\sqrt 2 :\sqrt 3

) is correct because the final velocity is proportional to the square root of the height from which the stone falls, as derived from the kinematic equation

v^2 = 2gh

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Velocity-time curve for a body projected vertically upwards is Two cars A and B approach each other at the same speed, then what will be the velocity of A if velocity of B is

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? Two cars are moving in the same direction with a speed of

30\mathrm{km}{\mathrm{h}^{ - 1}}

. They are separated from each other by 5 km. Third car moving in the opposite direction meets the two cars after an interval of 4 min. What is the speed of the third car? A body is projected vertically up with ‘u’. Its velocity at half its maximum height is A scooter starts from rest have an acceleration of

1 \mathrm{~ms}^{-2}

while a car

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behind it starts from rest with an acceleration of

2 \mathrm{~ms}^{-2}

. After how much time, the car catches up with the scooter? A motor vehicle travelled the first one third of a distance ‘S ’ at a speed of

{V_1} = 10\,kmph

, the second one third at a speed of

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and the last one third at a speed of

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determine the mean speed of the vehicle over the entire distance ‘S ’