A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is \(5~\text{m}\), the number of ball thrown per minute is: (take \(g = 10~\text{m/s}^2)\) 
1. \(120\)
2. \(80\)
3. \(60\)
4. \(40\)

A body falling from a high Minaret travels \(40\) meters in the last \(2\) seconds of its fall to the ground. The height of the Minaret in meters is: (take \(g = 10~\text{ms}^{-2}\)) 
1. \(60\)
2. \(45\)
3. \(80\)
4. \(50\)

A body falls from a height $h=200m$ (at New Delhi). The ratio of distance travelled in each 2 sec during t = 0 to t = 6 second of the journey is 

1. 1 : 4 : 9

2. 1 : 2 : 4

3. 1 : 3 : 5

4. 1 : 2 : 3

A man drops a ball downside from the roof of a tower of height 400 meters. At the same time another ball is thrown upside with a velocity 50 meter/sec. from the surface of the tower, then they will meet at which height from the surface of the tower 

1. 100 meters

2. 320 meters

3. 80 meters

4. 240 meters

Two balls are dropped from heights h and 2h respectively from the earth surface. The ratio of time of these balls to reach the earth is 

1. $1:\sqrt{2}$

2. $\sqrt{2}$ : 1

3. 2 : 1

4. 1 : 4

The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2m on the surface of A. What is the height of jump by the same person on the planet B 

1. 18m

2. 6m

3. $\frac{2}{3}m$

4. $\frac{2}{9}m$

A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is $(g=10m/s^2)$ 

1. 25m

2. 45m

3. 90m

4. 125m

If a body is thrown up with the velocity of \(15\) m/s, then the maximum height attained by the body is: (assume \(g = 10\) m/s²) 
1. \(11.25\) m
2. \(16.2\) m
3. \(24.5\) m
4. \(7.62\) m

A balloon is rising vertically up with a velocity of 29 ms^–1. A stone is dropped from it and it reaches the ground in 10 seconds. The height of the balloon when the stone was dropped from it is (g = 9.8 ms^–2) 

1. 100 m

2. 200 m

3. 400 m

4. 150 m

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