COMEDK 2022 | Motion Question 12 | Physics

A car is moving with a speed of 54 km/h. If after 3 s, the driver applies brakes and it stops, then how much distance is covered by the car before coming to rest?

22.5 m

20 m

25 m

45.2 m

COMEDK 2021

MCQ (Single Correct Answer)

-0

Which graph shows the correct $$v$$ - $$x$$ graph of a freely falling body?

COMEDK 2021 Physics - Motion Question 15 English Option 1

COMEDK 2021 Physics - Motion Question 15 English Option 2

COMEDK 2021

MCQ (Single Correct Answer)

-0

The displacement $$x$$ of a particle varies with time $$t$$, $$x=ae^{-pt}+be^{qt}$$, where a, b, p and q are positive constant. The velocity of the particle will

go on increasing forever

be independent of p and q

drop to zero when p = q

go on decreasing with time

COMEDK 2021

MCQ (Single Correct Answer)

-0

The angle of projection with the horizontal in terms of maximum height attained and horizontal range is given by

$${\tan ^{ - 1}}\left( {{{2H} \over {3R}}} \right)$$

$${\tan ^{ - 1}}\left( {{{4R} \over {3H}}} \right)$$

$${\tan ^{ - 1}}\left( {{{4H} \over R}} \right)$$

$${\tan ^{ - 1}}\left( {{R \over H}} \right)$$

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