List of top Physics Questions on Speed and velocity

Earth has mass 8 times and radius 2 times that of a planet. If the escape velocity from the earth is 11.2 km/s, the escape velocity in km/s from the planet will be:

A fluid flows through a pipe with varying cross-section. If the velocity at the narrow section is 3 m/s and the cross-sectional area is half of the wider section, what is the velocity in the wider section?

For a $1-D$ motion, relation between position x and time $t$ is $t = αx^2 + βx$ Find the relation between velocity $v$ and acceleration $a$.

A body of mass 1000 kg is moving horizontally with a velocity of 6 m/s. If 200 kg extra mass is added, the final velocity (in m/s) is:

A ball is released from a height of $1$ $m$ on a fixed smooth hemispherical surface as shown. Find its velocity when it is at a height of $0.5$ $m$ from ground. (take $g$ = $10\;m / s^2$)

A uniform disk of mass $50$ $kg$ is rolling without slipping with a speed of $0.4 \;m/s$. Find minimum energy required to bring the disk to rest (in $J$).

A ball of mass $120$ $g$ moving with initial velocity $25 \;m/s$ is stopped by an external force $F$ in $0.15$ $sec$. Find value of $F$ in newton :

Two trains run on North-South parallel tracks. Train A moves with velocity 20 m/s towards North and train B moves with velocity 30 m/s towards South. Then find the velocity of train B with respect to train A

Consider a series of steps as shown. A ball is thrown from 0. Find the minimum speed to directly jump to 5th step

The velocity (v) - time (t) plot of the motion of a body is shown below :

The acceleration (a) - time(t) graph that best suits this motion is :

A wheel of a bullock cart is rolling on a level road, as shown in the figure below. If its linear speed is v in the direction shown, which one of the following options is correct (P and Q are any highest and lowest points on the wheel, respectively) ?

Which of the following is NOT a layer of the urinary bladder?

The drift velocity of electrons for a conductor connected in an electrical circuit is $V _{ d }$ The conductor in now replaced by another conductor with same material and same length but double the area of cross section The applied voltage remains same The new drift velocity of electrons will be

A body is moving with constant speed, in a circle of radius $10 m$ .The body completes one revolution in 4 s .At the end of 3 rd second, the displacement of body (in mi) from its starting point is :

A vehicle travels $4 \, km$ with speed of $3\, km / h$ and another $4 \, km$ with speed of $5\, km / h$, then it's average speed is

The velocity-time graph of a body moving in a straight line is shown in the figure.

The ratio of displacement to distance travelled by the body in time 0 to 10s is:

The distance travelled by a particle is related to time $t$ as $x=4 t^2$ The velocity of the particle at $t-5 s$ is:-

A car travels a distance of ' $x$ ' with speed $v_1$ and then same distance ' $x$ ' with speed $v_2$ in the same direction The average speed of the car is:

A passenger sitting in a train A moving at 90 km/h observes another train B moving in the opposite direction for 8 s. If the velocity of train B is 54 km/h, then the length of train B is:

An object moves with speed $v_1, v_2$ and $v_3$ along a line segment $AB , BC$ and $C D$ respectively as shown in figure Where $AB = BC$ and $AD =3 AB$, then average speed of the object will be:

A horse rider covers half the distance with $5\, m / s$ speed The remaining part of the distance was travelled with speed $10\, m / s$ for half the time and with speed $15\, m / s$ for other half of the time The mean speed of the rider averaged over the whole time of motion is $\frac{x}{7} m / s$ The value of $x$ is _____

An object of mass 'm' initially at rest on a smooth horizontal plane starts moving under the action of force $F=2 N$ In the process of its linear motion, the angle $\theta$ (as shown in figure) between the direction of force and horizontal varies as $\theta=k x$, where $k$ is a constant and $x$ is the distance covered by the object from its initial position The expression of kinetic energy of the object will be $E=\frac{n}{k} \sin \theta$ The valte of $n$ is

An object of mass m initially at rest on a smooth horizontal plane starts moving

A particle is moving with constant speed in a circular path. When the particle turns by an angle $90\degree$ , the ratio of instantaneous velocity to its average velocity is $π : x\sqrt2$. The value of x will be -

The ratio of escape velocity of a planet to the escape velocity of earth will be:- Given: Mass of the planet is 16 times mass of earth and radius of the planet is 4 times the radius of earth.

The figure shows a liquid of given density flowing steadily in horizontal tube of varying cross - section. Cross sectional areas at A is 1.5 cm², and B is is 25 mm², if the speed of liquid at B is 60 cm/s then $(P_A-P_B)$ is:
(Given $P_A$ and $P_B$ are liquid pressures at A and B points.
density $ρ = 1000 \space kg \space m^{-3}$
A and B are on the axis of tube)