The correct filled terms are force and displacement for part one, one for part two, half m v square for part three, m g h for part four and rate for part five respectively.
Fill in the blanks. (i) Work done = _____ multiplied by _____ (in the direction of force).(ii) 1 joule of work is done when a force of _____ newton displaces an object by 1 metre in the direction of the force. (iii) The expression for kinetic energy of a body of mass m and velocity v is _____. (iv) The potential energy of an object of mass m at a small height h from the Earth surface is _____. (v) Power is defined as the _____ at which work is done.
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For item one, work equals force multiplied by displacement in the direction of force. For item two, one joule of work occurs when a force of 1 newton moves an object by 1 metre. For item three, kinetic energy equals half m v square. For item four, gravitational potential energy equals m g h. For item five, power is defined as the rate of doing work.
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