Quiz on lesson one unit 2

Potential energy equals…….

The measuring unit of energy is …..

Potential energy of an object is…….proportional to its weight and height from the ground

………=potential energy +kinetic energy

A bar of chocolate has chemical energy

Measuring units of weight and speed respectively are Newton and m/sec

As an object is launched upwards……

……. is a source of sound energy

Work = ………* displacement

Energy produced from solar cells is electric energy

If the speed of a moved object is doubled, its kinetic energy increases…….

At the mid point between the maximum height and the ground of a falling objects its potential energy is less than its kinetic energy at the same point

An object of mass 2 Kg is moving at a speed of 4 m/ sec, has a kinetic energy of …….

What’s the energy stored in stretched spring

If a ball thrown vertically to reach 20m height and its weight is 5 Newton, so its potential energy at the ground is zero