COMEDK 2025 Morning Shift | Laws of Motion Question 3 | Physics

A stone is dropped from a height $h$. It hits the ground with a certain momentum ' $p$ '. If the same stone is dropped from a different height h ' such that percentage change in momentum is $41.4 \%$, then the height from which the stone is dropped is $\mathrm{h}^{\prime}=x \mathrm{~h}$, where $x$ is:

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

A body initially at rest undergoes rectilinear motion. The forcetime (F-t) graph for the motion of the body is given below. Find the linear momentum gained by the body in $$2 \mathrm{~s}$$.

COMEDK 2024 Evening Shift Physics - Laws of Motion Question 4 English

$$ \pi N-s $$

$$ \frac{\pi}{2} \mathrm{~N}-\mathrm{s} $$

$$ \frac{\pi}{4} N-s $$

$$ 2 \pi N-s $$

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

Action and reaction can never balance out because

They are unequal in magnitudes

Though they are equal in magnitude and opposite in direction they act on different bodies.

They are equal in magnitude but not opposite always.

They are unequal in magnitudes even though opposite in direction

COMEDK 2024 Afternoon Shift

MCQ (Single Correct Answer)

-0

A cube bar slides thrice the time with friction than that without friction when it slides on an inclined plane of inclination $$45^{\circ}$$. The coefficient of friction between the block and the surface is

0.66

0.88

0.5

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