A man in a balloon rising vertically with an acceleration of $4.9\, m/sec^2$, releases a ball $2\, seconds$ after the balloon is let go from the ground. the greatest height above the ground reached by the ball is ..........$m$ :-
A man in a balloon rising vertically with an acceleration of $4.9\, m/sec^2$, releases a ball $2\, seconds$ after the balloon is let go from the ground. the greatest height above the ground reached by the ball is ..........$m$ :-
- A
$14.7$
- B
$19.6$
- C
$9.8$
- D
$24.5$
Similar Questions
Let $v$ and $a$ denote the velocity and acceleration respectively of a body
Let $v$ and $a$ denote the velocity and acceleration respectively of a body
A bus is moving with a velocity $10\, ms^{-1}$ on a straight road. A scooterist wishes to overtake the bus in $100\, s$. If the bus is at a distance of $1\, km$ from the scooterist, with what velocity should the scooterist chase the bus ?.........$ms^{-1}$
A bus is moving with a velocity $10\, ms^{-1}$ on a straight road. A scooterist wishes to overtake the bus in $100\, s$. If the bus is at a distance of $1\, km$ from the scooterist, with what velocity should the scooterist chase the bus ?.........$ms^{-1}$
The velocity of bullet is reduced from $200\; m / s$ to $100\; m / s$ while travelling through a wooden block of thickness of $10 \;cm$ . The retardation assuming to be uniform, will be ...........$\times {10^4}\, m/s^2$
The velocity of bullet is reduced from $200\; m / s$ to $100\; m / s$ while travelling through a wooden block of thickness of $10 \;cm$ . The retardation assuming to be uniform, will be ...........$\times {10^4}\, m/s^2$
Which of the following option is correct for a object having a straight line motion represented by the following graph ?
Which of the following option is correct for a object having a straight line motion represented by the following graph ?
A point moves with uniform acceleration and $v_1, v_2$ and $v_3$ denote the average velocities in the three successive intervals of time $t_1, t_2$ and $t_3$. Which of the following relations is correct?
A point moves with uniform acceleration and $v_1, v_2$ and $v_3$ denote the average velocities in the three successive intervals of time $t_1, t_2$ and $t_3$. Which of the following relations is correct?