Work & Energy — Set 6

1 joule is defined as the work done when?

Work done by a variable force is equal to?

Convert 36 km/h into m/s.?

What is the kinetic energy of a 10 kg body moving with speed 2 m/s?

Gravitational potential energy near Earth’s surface is given by?

How much work is needed to raise a 2 kg mass by 10 m? (Take g = 10 m/s^2)?

In a simple pendulum, at the mean (lowest) position, the bob has?

The efficiency of any machine can never be greater than?

Elastic potential energy stored in a spring is proportional to?

A 100 W bulb glows for 10 hours. How much energy is used in kWh?