A ball is released from the top of a tower of height h meters. It takes T seconds to reach the ground. What is the position of the ball in T/3 seconds

(1) h/9 meters from the ground

(2) 7h/9 meters from the ground

(3) 8h/9 meters from the ground

(4) 17h/18 meters from the ground

Concept Questions :-

Instantaneous speed and instantaneous velocity
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Two balls of same size but the density of one is greater than that of the other are dropped from the same height, then which ball will reach the earth first (air resistance is negligible)

(1) Heavy ball

(2) Light ball

(3) Both simultaneously

(4) Will depend upon the density of the balls

Concept Questions :-

Uniformly accelerated motion
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A packet is dropped from a balloon which is going upwards with the velocity 12 m/s, the velocity of the packet after 2 seconds will be

(1) –12 m/s

(2) 12 m/s

(3) –7.6 m/s

(4) 7.6 m/s

Concept Questions :-

Uniformly accelerated motion
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If a freely falling body travels in the last second a distance equal to the distance travelled by it in the first three second, the time of the travel is

(1) 6 sec

(2) 5 sec

(3) 4 sec

(4) 3 sec

Concept Questions :-

Uniformly accelerated motion
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The effective acceleration of a body, when thrown upwards with acceleration a will be :

(1) $\sqrt{a-{g}^{2}}$

(2) $\sqrt{{a}^{2}+{g}^{2}}$

(3) $\left(a-g\right)$

(4) $\left(a+g\right)$

Concept Questions :-

Uniformly accelerated motion
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A body is thrown vertically upwards with velocity u. The distance travelled by it in the fifth and the sixth seconds are equal. The velocity u is given by (g = 9.8 m/s2

(1) 24.5 m/s

(2) 49.0 m/s

(3) 73.5 m/s

(4) 98.0 m/s

Concept Questions :-

Uniformly accelerated motion
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A body, thrown upwards with some velocity reaches the maximum height of 50 m. Another body with double the mass thrown up with double the initial velocity will reach a maximum height of

(1) 100 m

(2) 200 m

(3) 300 m

(4) 400 m

Concept Questions :-

Uniformly accelerated motion
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A parachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at 2 m/s2. He reaches the ground with a speed of 3 m/s. At what height, did he bail out ?

(1) 293 m

(2) 111 m

(3) 91 m

(4) 182 m

Concept Questions :-

Uniformly accelerated motion
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When a ball is thrown up vertically with velocity V0, it reaches a maximum height of 'h'. If one wishes to triple the maximum height then the ball should be thrown with velocity

1. $\sqrt{3}{V}_{o}$

2. 3 V0

3. 9 V0

4. 3/2 V0

Concept Questions :-

Uniformly accelerated motion
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Difficulty Level:

A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is

(1) 4.0 m/s

(2) 5.0 m/s

(3) 5.5 m/s

(4) 4.8 m/s

Concept Questions :-

Average speed and average velocity