List of top Physics Questions on speed and velocity asked in AP EAMCET

A car sounding a horn of frequency 1000 Hz passes a stationary observer. The ratio of frequencies of the horn noted by the observer before and after passing of the car is 11:9. The speed of the car is (Speed of sound $v = 340 \, {ms}^{-1}$ ):

A particle is projected from the surface of the Earth with a velocity equal to twice the escape velocity. When the particle is far from the Earth, its speed will be:

A 4 kg stone is attached to a steel wire being whirled at a constant speed of $12$ m/s in a horizontal circle. The wire is 4 m long with a diameter of 2 mm, and Young’s modulus is $2 \times 10^{11}$ Nm $^2$ . The strain in the wire is:

A spherical ball of radius $1 \times 10^{-4}$ m and density $10^4$ kgm $^{-3}$ falls freely under gravity before entering water. The distance $h$ before velocity change in water is:

The acceleration of a particle which moves along the positive $x$ -axis varies with its position as shown in the figure. If the velocity of the particle is $0.8 \, {m/s}$ at $x = 0$ , then its velocity at $x = 1.4 \, {m}$ is: \includegraphics[]{83.png}

A block of metal 4 kg is in rest on a frictionless surface. It was targeted by a jet releasing water of 2 kg/s at a speed of 10 ms $^{-1}$ . The acceleration of the block is:

A machine with efficiency $\frac{2}{3}$ used 12 J of energy in lifting a 2 kg block through a certain height and it is allowed to fall through the same. The velocity while it reaches the ground is:

The velocity of a particle is given by the equation $v(x) = 3x^2 - 4x$ , where $x$ is the distance covered by the particle. The expression for its acceleration is:

A particle of mass 2 g and charge 6 $\mu$ C is accelerated from rest through a potential difference of 60 V. The speed acquired by the particle is:

A particle revolving in a circular path travels the first half of the circumference in 4 s and the next half in 2 s. What is its average angular velocity?

If two stones are projected at angle $\theta$ and $(90^\circ - \theta)$ respectively with horizontal with a speed of $20 \, {m/s}$ . If the second stone rises $10 \, {m}$ higher than the first stone, then the angle of projection $\theta$ is (acceleration due to gravity = $10 \, {m/s}^2$ ):

The relation between time $t$ and displacement $x$ is $t = \alpha x^2 + \beta x$ , where $\alpha$ and $\beta$ are constants. If $\nu$ is the velocity, the retardation is:

A wire of 60 cm length and mass 10 g is suspended by a pair of flexible leads in a magnetic field of 0.60 T as shown in the figure. The magnitude of the current required to remove the tension in the supporting leads is:

A coil of two turns is made of a wire length L and another coil of four turns is made from same length L. When the same current is flowing in two coils, then the ratio of magnetic inductions at their centres is:

A parallel plate capacitor has two square plates of side 5 cm separated by 15 mm. A Pyrex glass slab of dielectric constant $K = 4.5$ and thickness 10 mm is placed between the plates. The capacitance of the capacitor is:

When a tension of $F_1$ is applied on a metal wire its length is $L_1$ , if the tension is $F_2$ , length becomes $L_2$ . Then the original length of the wire is:

If the work done $W$ , length $L$ and time $T$ are considered as the fundamental quantities, the dimensional formula for mass is:

The velocity of an object moving in a straight line path is given as a function of time by

v = 6t - 3t^2

. where

v

is in

ms^{-1} , t

is in

s

. The average velocity of the object between

t = 0

and

t = 2s

is