A balloon starts rising from the ground with an acceleration of 1.25 m/s² . After 8s, a stone is released from the balloon. The stone will (g = 10 m/s²) 

(1) Reach the ground in 4 second

(2) Begin to move down after being released

(3) Have a displacement of 50 m

(4) Cover a distance of 40 m in reaching the ground

A body is thrown vertically upwards with a velocity u. Find the true statement from the following:

(1) Both velocity and acceleration are zero at its highest point

(2) Velocity is maximum and acceleration is zero at the highest point

(3) Velocity is maximum and acceleration is g downwards at its highest point

(4) Velocity is zero at the highest point and maximum height reached is $u^2/2g$

A man throws a ball vertically upward and it rises through 20 m and returns to his hands. What was the initial velocity (u) of the ball and for how much time (T) it remained in the air $[g=10m/s^2]$ 

(1) u = 10 m/s, T = 2s

(2) u = 10 m/s, T = 4s

(3) u = 20 m/s, T = 2s

(4) u = 20 m/s, T = 4s

A particle when thrown moves such that it passes from the same height at 2 sec and 10 sec, the height is:

(1) g

(2) 2g

(3) 5g

(4) 10g

From the top of a tower, a particle is thrown vertically downwards with a velocity of 10 m/s. The ratio of the distances, covered by it in the 3^rd and 2^nd seconds of the motion is (Take $g=10m/s^2$) 

1. 5 : 7  

2. 7 : 5

3. 3 : 6

4. 6 : 3

Two balls A and B of same masses are thrown from the top of the building. A, thrown upward with velocity v and B, thrown downward with velocity v, then 

(1) Velocity of A is more than B at the ground

(2) Velocity of B is more than A at the ground

(3) Both A & B strike the ground with same velocity

(4) None of these

A cricket ball is thrown up with a speed of 19.6 ms^–1. The maximum height it can reach is:

(1) 9.8 m

(2) 19.6 m

(3) 29.4 m

(4) 39.2 m

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