Two points move in the same straight line starting at the same mo… - Vidyadip

MCQ

Two points move in the same straight line starting at the same moment from the same point in it. The first moves with constant velocity $u$ and the second with constant acceleration $f$. During the time elapses before the second catches, the first greatest distance between the particle is $........$

A
$\frac{u}{f}$
✓
$\frac{u^2}{2 f}$
C
$\frac{f}{2 u^2}$
D
$\frac{f}{u^2}$

✓

Answer

Correct option: B.

$\frac{u^2}{2 f}$

b
(b)

The greatest distance, when velocities of both are equal.

$\text { or } \quad f t=u$

$t=\frac{u}{f}$

$s_1=u t=\frac{u^2}{f}$

and

$s_2=\frac{1}{2} f t^2=\frac{u^2}{2 f}$

$\therefore \quad s_{\max }=s_1-s_2=\frac{u^2}{2 f}$

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

Explore more

More "M.C.Q (1 Marks)" from 2. motion in straight line→2. motion in straight line — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A vibrating string of certain length $l$ under a tension $T$ resonates with a mode corresponding to the first overtone (third harmonic) of an air column of length $75\, cm$ inside a tube closed at one end. The string also generates $4\, beats$ per second when excited along with a tuning fork of frequency $n$. Now when the tension of the string is slightly increased the number of beats reduces to $2\, per second$. Assuming the velocity of sound in air to be $340\, m/s$, the frequency $n$ of the tuning fork in $Hz$ is

The Young's modulus of a wire is $y$. If the energy per unit volume is $E$, then the strain will be

Water flows in a streamlined manner through a capillary tube of radius $a$, the pressure difference being $P$ and the rate of flow $Q$. If the radius is reduced to $a/2$ and the pressure increased to $ 2P, $ the rate of flow becomes

The $SI$ unit of the inductance, the henry cannot be written as

Find Temperature difference between $B$ and $C$ ? (All rods are identical)

A uniform bar of square cross$-$section is lying along a frictionless horizontal surface. A horizontal force is applied to pull it from one of its ends, then:

A man squatting on the ground gets straight up and stand. The force of reaction of ground on the man during the process is:

A beaker is completely filled with water at $4°C$. It will overflow if

The position vector of a particle is determined by the expression $\vec r = 3{t^2}\hat i + 4{t^2}\hat j + 7\hat k$ The distance traversed in first $10 \,sec$ is........ $m$

When water boils or freezes, during these processes its temperature: