2. While salam was returning from school on
his bicycle , he had a bag containing 10 Kg
of rice along with his school bag full of
books. When he came to an ascent on the
road he has tired.Can you say why salam
could not pedal his bicycle up the incline?
3. Energy is the ability to do work.
The unit of Energy is joule
4. Eanergy can be mainly classified into
two types-Kinetic Energy and potential
Energy based on how energy occur in
an object due to its state or position
and motion
5. Object possess energy by virtue of
their position.This is potential energy.If
an object of mass m is at a height h
the potential energy U=mgh.
6. Kinetic Energy is the energy of an
object due to its motion.
The kinetic energy of an object of
mass m and vlocity v is K=1/2 m*v*v
7. A bullet of mass .005Kg is fired from a
pistol with a velocity of 200 m/s.What
is the kinetic energy of the bullet?
