Last seen: Nov 14, 2021
Potential energy is a scalar quantity as it has magnitude only.
Mass = 1 kg Velocity = 2 m/s KE = mv2 = 2J
Let the masses of A and B = m Height of A = h Height of B = 2h Potential energy for body A, PEA = mgh Potential energy for body B, PEB = mg2h ...
(a) Both kinetic and potential energy (b) Both kinetic and potential energy (c) Only kinetic energy (d) Only potential energy (e) Only pot...
Mass = 50kg Kinetic energy = 625 J v = ? KE = mv2 v = 5 m/s
Doubling the velocity would have a greater effect on the kinetic energy of an object.
Following are the factors on which the kinetic energy of a body depends: (a) mass of the body, m. (b) square of velocity of the body, v2.
The kinetic energy will become one-fourth the actual value when the speed of the body is halved.
Mass = m Velocity = v KE = mv2
The kinetic energy is directly proportional to the square of the speed of the body. Therefore, when the kinetic energy of the body is increased, the k...
The work done against the gravity when a body is move horizontally along a frictionless surface is zero as the force of gravity acts perpendicular to ...
(a) Unit of work is Joule. (b) Unit of energy is Joule.
Energy is a scalar quantity as it has only magnitude.
When a motion is produced in the body, work is said to be done on the body as force is applied on it.
The work done on a body is said to be 1 J when a force of 1 N is applied to move a body through a distance of 1m.
Work is a scalar quantity as it requires only magnitude.
SI unit of work is Joule.
Mass = m Height above the ground = h Work done = potential energy acquired by the body = mgh Where g is the acceleration due to gravity.
The sheet of tin sinks in water because the density of tin is higher than that of water. When the same sheet of tin is converted into a box or a boat,...
(a) The boat sinks a little more in water, that is, the boat floats lower in water. (b) The weight of water displaced (by the submerged part of the...