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The kinetic energy of an object of mass, m moving with a velocity of 5 ms-1 is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times? - Physics Cbse class 11 1 AnswerWhat is the kinetic energy of an object? - Physics Cbse class 11 1 AnswerWrite an expression for the kinetic energy of an object. - Physics Cbse class 11 1 AnswerAn annular disc has a mass m, inner radius R and outer radius 2R. The disc rolls on a flat surface without slipping. If the velocity of the centre of mass is v, the kinetic energy of the disc is: (-Gate mechanical 2014)1 AnswerThe kinetic energy of a body is increased by 300%. What is the percentage increase in the linear momentum of the body? -Physics Cbse class 11 1 AnswerState Work – Kinetic energy theorem and prove it analytically. -Physics Cbse class 11 0 AnswerA circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is -Mechanical Engineering-gate-20121 AnswerWhat is kinetic energy?1 AnswerTwo objects, each of mass 1.5 kg are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m s-1 before the collision during which they stick together. What will be the velocity of the combined object after collision? - Physics Cbse class 11 1 AnswerTwo objects of masses 100 g and 200 g are moving along the same line and direction with velocities of 2 m s-1 and 1 m s-1, respectively. They collide and after the collision, the first object moves at a velocity of 1.67 m s-1. Determine the velocity of the second object. - Physics Cbse class 11 1 AnswerA hoop of radius r and mass m rotating with an angular velocity ω0 is placed on a rough horizontal surface. The initial velocity of the centre of the hoop is zero. What will be the velocity of the centre of the hoop when it ceases to slip ? - physics 20130 AnswerAn object of mass 1 kg travelling in a straight line with a velocity of 10 ms-1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object. - Physics Cbse class 11 1 AnswerDefine the terms elastic and inelastic collisions Physics Cbse class 11 1 AnswerWhich energy is converted into electrical energy by a solar cell ? 1 AnswerAn object of mass 100 kg is accelerated uniformly from a velocity of 5 ms-1 to 8 ms-1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object. - Physics Cbse class 11 0 AnswerAn object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason. - Physics Cbse class 11 0 AnswerAn electron and a proton are moving on straight parallel paths with same velocity. They enter a semi-infinite region of uniform magnetic field perpendicular to be velocity. Which of the following statement(s) is/are true? - jee main 2012 physics 1 AnswerState which of the following situations are possible and give an example for each of these: (a) An object with a constant acceleration but with zero velocity. (b) An object moving in a certain direction with an acceleration in the perpendicular direction. - Physics Cbse class 11 1 AnswerThe pressure and velocity at the throat of a Venturi tube, measuring the flow of a liquid, are related to the upstream pressure and velocity, respectively, as follows: GATE-Instrumentation-Engineering-20141 AnswerObtain the expression for potential energy of a spring. -Physics Cbse class 11 0 Answer