MCQ
An observer moves with a constant speed along the line joining two stationary objects. He will observe that the two objects
  • A
    have the same speed
  • B
    have the same velocity
  • C
    move in the same direction
  • All of the above

Answer

Correct option: D.
All of the above
d
$V _{\text {rel }}= V _{\text {object }}- V _{\text {frame }}$

Since velocity of both objects is $zero$, thus the relative velocity and speed will be same for both objects also the direction will be the same.

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

Angular momentum and areal velocity of a body of mass m are related as:
A projectile is thrown at an angle $\theta$ such that it is just able to cross a vertical wall at its highest point as shown in the figure.The angle $\theta$ at which the projectile is thrown is given by
A particle of mass $\mathrm{m}$ is projected with a speed $u$ from the ground at an angle $\theta=\frac{\pi}{3}$ w.r.t. horizontal ($x-$axis). When it has reached its maximum height, it collides completely inelastically with another particle of the same mass and velocity $u \hat i$. The horizontal distance covered by the combined mass before reaching the ground is
Two discs of same mass and different radii are made of different materials such that their thicknesses are $1\,cm$ and $0.5\,cm$ respectively. The densities of materials are in the ratio $3: 5$. The moment of inertia of these discs respectively about their diameters will be in the ratio of $\frac{x}{6}$. The value of $x$ is $.......$.
Which of the following curves may represent the speed of the electron in a hydrogen atom as a function of the principal quantum number n?

From the top of a tower of height 40m, a ball is projected upwards with a speed of 20m/ s at an angle of elevation of 30°. The ratio of the total time taken by the ball to hit the ground to its time of flight time taken to come back to the same elevation) is (Take g = 10m/ s2)
A flat horizontal board moves up and down under $S.H.M.$ vertically with amplitude $A$. The shortest permissible time period of the vibration such that an object placed on the board may not lose contact with the board is ..........
Two balls are projected upward simultaneously with speeds $40 \,m / s$ and $60 \,m / s$. Relative position $(x)$ of second ball w.r.t. first ball at time $t=5 s$ is .......... $m$ [Neglect air resistance].
The collisions of the molecules of an ideal gas are:
A uniformly tapering vessel is filled with a liquid of density $900 kg/m^3.$  The force that acts on the base of the vessel due to the liquid is ......... $N$. $(g = 10\,m{s^{ - 2}})$