MCQ
To get the maximum flight, a ball must be thrown as
  • A


  • C

  • D
    Any of $(a), (b)$ and $(c)$

Answer

Correct option: B.

b
(b) If a ball is moving from left to right and also spinning about a horizontal axis in anticlockwise wise direction about a horizontal axis perpendicular to the direction of motion then relative to the ball air will be moving form right to left. The resultant $v$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A bus starts moving with acceleration $2\,m / s ^2$. A cyclist $96\,m$ behind the bus starts simultaneously towards the bus at $20\,m / s$. After $........\,s$ time will he be able to overtake the bus.
A uniform disc with mass $M=4\,kg$ and radius $R=$ $10\,cm$ is mounted on a fixed horizontal axle as shown in figure. A block with mass $m =2\,kg$ hangs from a massless cord that is wrapped around the rim of the disc. During the fall of the block, the cord does not slip and there is no friction at the axle. The tension in the cord is_______ $N$

$\left(\right.$ Take $\left.g =10\,ms ^{-2}\right)$

Figure shows a snapshot for a travelling sine wave along a string. Four elemental portions $a, b, c$ and $d$ are indicated on the string. The elemental portion which has maximum potential energy is/are
At time $t = 0$, a simple harmonic oscillator is at its extreme position. If it covers half of  the amplitude distance in $1\, second$, then the time period of oscillation is ..... $s$
The end $B$ of the rod $AB$ which makes angle $\theta$ with the floor is being pulled with, a constant velocity $v_0$ as shown. The length of the rod is $l.$ At the instant when $\theta = 37^o $ then
Wires $A$ and $B$ have identical lengths and have circular cross-sections. The radius of $A$ is twice the radius of $B$ $i.e.$ ${r_A} = 2{r_B}$. For a given temperature difference between the two ends, both wires conduct heat at the same rate. The relation between the thermal conductivities is given by
A seconds pendulum clock has a steel wire. The clock shows correct time at $25^{\circ} C$. .......... $s$ time does the clock lose or gain, in one week, when the temperature is increased to $35^{\circ} C$ ? $\left(\alpha_{\text {toel }}=1.2 \times 10^{-5} /{ }^{\circ} C \right)$
$A$ section of fixed smooth circular track of radius $R$ in vertical plane is shown in the figure. $A$ block is released from position $A$ and leaves the track at $B$. The radius of curvature of its trajectory when it just leaves the track at $B$ is:
$28\,\, gm$ of $N_2$ gas is contained in a flask at a pressure of $10$ atm and at a temperature of $57^o$. It is found that due to leakage in the flask, the pressure is reduced to half and the temperature reduced to $27\,^oC$. The quantity of $N_2$ gas that leaked out is
The area under the velocity time graph between any two instants t = t1 and t = t2 gives the distance covered in a time $\delta\text{t}=\text{t}_2-\text{t}_1:$