NEET UG PHYSICS MCQ: MOTION IN A STRAIGHT LINE

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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?

View answer and explanation

Correct option: D

\mathrm{45km}{\mathrm{h}^{ - 1}}

Option D (

\mathrm{45km}{\mathrm{h}^{ - 1}}

) is correct because it is calculated by using the concept of relative speed and the given time interval.

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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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? 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

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while a car

150 \mathrm{~m}

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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

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determine the mean speed of the vehicle over the entire distance ‘S ’ A particle is projected with velocity

{v_0}

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The distance at which the particle stops is