List of top Physics Questions on work, energy and power asked in AP EAPCET

The velocity-time graph of a body of mass 4 kg moving along a straight line is shown in figure. Work done by all the forces acting on the body from \( t=0 \) to \( t=5s \) is
As shown in figure, a particle slides on a frictionless track which terminates in a straight line horizontal section B. If the particle starts slipping from A, then the horizontal distance to be covered by the particle before it hits the ground after crossing B is:
A body of mass $5\text{ kg}$ is projected vertically upwards from a point $X$ from the ground with an initial speed of $20\text{ ms}^{-1}$. It rises to a point $Y$ where its kinetic energy is reduced to $400\text{ J}$. If the body experiences a constant air resistance of $10\text{ N}$ throughout its motion, then the vertical distance between $X$ and $Y$ is (Acceleration due to gravity $=10\text{ ms}^{-2}$)
An engine pumps water continuously through a hose pipe. If the water leaves the pipe with velocity $v$ and $m$ is the mass per unit length of the water in the pipe, then the rate at which kinetic energy is imparted to the water is:
Two bodies A and B of masses 1.5 kg and 3 kg are moving with velocities 20 m/s and 15 m/s respectively. If the same retarding force is applied on the two bodies, then the ratio of the distances travelled by the bodies A and B before they come to rest is
If a position dependent force $(3x^2 - 2x + 7)N$ acting on a body of mass 2 kg displaces it from $x = 0\, m$ to $x = 5\, m$, then the work done by the force is
If a force F = (3i - 2j) N acting on a body displaces it from point (1 m, 2 m) to point (2 m, 0 m), then work done by the force is
A bullet of mass 20 g moving with $500 \text{ ms}^{-1}$ is pierd 1 cm into a wooden block, then the retarding for experiend by the bullet is
The energy consumed by a 1000 W electric bulb when it is used for 1 hour is
A block of mass 5 kg moving on a rough surface with a velocity of 4 ms\(^{-1}\) is stopped by the friction in 2 seconds. Then the coefficient of friction between the contact surfaces is:
A toy car of mass 100 g is moving with velocity of $(\hat{i}+2\hat{j}-3\hat{k})$ m/s, then the kinetic energy of the car is
When a spring of force constant \(200~\text{Nm}^{-1}\) is compressed by a force of \(10~\text{N}\), then the compression in the spring is
The speed of a body of mass 10 kg changes from 20 ms$^{-1}$ to 30 ms$^{-1}$. The increase in the kinetic energy of the body is
A system consists of two springs connected in series and each having the spring constant \(10\,\text{N m}^{-1}\). The minimum work required to stretch this system by \(1\,\text{cm}\) in erg is
A mass of 1 kg falls from a height of 1 m and lands on a massless platform supported by a spring with spring constant \( 15 \, \text{Nm}^{-1} \). The maximum compression of the spring is (take \( g = 10 \, \text{ms}^{-2} \))
A mass of 1 kg falls from a height of 1 m
A block of mass \(5\,\text{kg}\) starts up a \(45^\circ\) incline with an initial kinetic energy of \(100\,\text{J}\). The coefficient of friction is \(0.5\). The distance it travels before coming to rest is:
Two balls A (mass M) and B (mass 2M) collide elastically. If A moves at 150 m/s and comes to rest, find velocity of B before collision. \( e = 1 \).
A ball of mass 300 g is dropped from a height of 10 m and penetrates 1.5 m into sand. Find the average resistance by the sand. Take \( g = 10\ \text{m/s}^2 \).
A lift raises 50 passengers of average weight \(600\,\text{N}\) each to a height of \(100\,\text{m}\) in time \(T\). If average power used is \(15\,\text{kW}\), then the value of \(T\) is:
A bead of mass 400 g is moving along a straight line under a force delivering constant power 1.2 W. If the bead is initially at rest, the speed attained after 6 seconds is (in \( \text{ms}^{-1} \))