Two stones of different masses are dropped simultaneously from the top of a building

(1) Smaller stone hit the ground earlier

(2) Larger stone hit the ground earlier

(3) Both stones reach the ground simultaneously

(4) Which of the stones reach the ground earlier depends on the composition of the stone

Concept Questions :-

Uniformly accelerated motion
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A body thrown up with an initial speed of $96\text{\hspace{0.17em}}ft/\mathrm{sec}$ reaches the ground after $\left(g=32ft/{\mathrm{sec}}^{2}\right)$

(1) 3 sec

(2) 6 sec

(3) 12 sec

(4) 8 sec

Concept Questions :-

Uniformly accelerated motion
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A stone is dropped from a certain height which can reach the ground in 5 second. If the stone is stopped after 3 second of its fall and then allowed to fall again, then the time taken by the stone to reach the ground for the remaining distance is

(1) 2 sec

(2) 3 sec

(3) 4 sec

(4) None of these

Concept Questions :-

Uniformly accelerated motion
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A man in a balloon rising vertically with an acceleration of $4.9\text{\hspace{0.17em}}m/{\mathrm{sec}}^{2}$ releases a ball 2 sec after the balloon is let go from the ground. The greatest height above the ground reached by the ball is $\left(g=9.8\text{\hspace{0.17em}}m/{\mathrm{sec}}^{2}\right)$

(1) 14.7 m

(2) 19.6 m

(3) 9.8 m

(4) 24.5 m

Concept Questions :-

Uniformly accelerated motion
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A particle is dropped under gravity from rest from a height $h\left(g=9.8\text{\hspace{0.17em}}m/{\mathrm{sec}}^{2}\right)$ and it travels a distance 9h/25 in the last second, the height h is

(1) 100 m

(2) 122.5 m

(3) 145 m

(4) 167.5 m

Concept Questions :-

Uniformly accelerated motion
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A balloon is at a height of 81 m and is ascending upwards with a velocity of 12 m/s. A body of 2 kg weight is dropped from it. If $g=10\text{\hspace{0.17em}}m/{s}^{2}$, the body will reach the surface of the earth in

(1) 1.5 s

(2) 4.025 s

(3) 5.4 s

(4) 6.75 s

Concept Questions :-

Uniformly accelerated motion
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An aeroplane is moving with a velocity u. It drops a packet from a height h. The time t taken by the packet in reaching the ground will be

(1) $\sqrt{\left(\frac{2g}{h}\right)}$

(2) $\sqrt{\left(\frac{2u}{g}\right)}$

(3) $\sqrt{\left(\frac{h}{2g}\right)}$

(4) $\sqrt{\left(\frac{2h}{g}\right)}$

Concept Questions :-

Uniformly accelerated motion
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Water drops fall at regular intervals from a tap which is 5 m above the ground. The third drop is leaving the tap at the instant the first drop touches the ground. How far above the ground is the second drop at that instant

(1) 2.50 m

(2) 3.75 m

(3) 4.00 m

(4) 1.25 m

Concept Questions :-

Uniformly accelerated motion
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A ball is thrown vertically upwards from the top of a tower at $4.9\text{\hspace{0.17em}\hspace{0.17em}}m{s}^{-1}$. It strikes the pond near the base of the tower after 3 seconds. The height of the tower is

(1) 73.5 m

(2) 44.1 m

(3) 29.4 m

(4) None of these

Concept Questions :-

Uniformly accelerated motion
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An aeroplane is moving with horizontal velocity u at height h. The velocity of a packet dropped from it on the earth's surface will be (g is acceleration due to gravity)

(1) $\sqrt{{u}^{2}+2gh}$

(2) $\sqrt{2gh}$

(3) 2 gh

(4) $\sqrt{{u}^{2}-2gh}$

Concept Questions :-

Uniformly accelerated motion
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: