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संबंधित प्रश्न
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.
What are the two kinds of mechanical energy?
A car is running at a speed of 15 km h-1 while another similar car is moving at a speed of 45 km h-1. Find the ratio of their kinetic energies.
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
Name the CGS unit of work.
Name two places in India where electricity is generated from nuclear power plants.
A force can cause an object to change its ______.
