Force Changes the State of Motion, Shape and Size of Object Video Lecture | Science Class 8

in the game of cricket when a batsman
swings the bat he hits the oncoming ball
such that the ball is forced to change
the direction in which it was moving
what happens if the ball is then caught
by a fielder its motion is stopped in
both cases you see the effects of
application of force the batsman is
using force to change the direction of a
moving object and the fielder uses force
to stop the motion of the moving object
let us see the different effects of
force
for this we need modeling clay toy car
metal spring take the modeling clay and
place it between your hands apply force
with both your hands you will see that
the clay has changed its shape force has
changed the shape of the clay
now take the toy car and push it the
force applied moves the stationary car
forward if you place your hand in front
of the moving car the car will come to a
stop now take the metal spring and press
it with the fingertips the size of the
spring has changed due to force this
shows that force when applied to
different objects changes the shape size
and motion of objects place a thin strip
of plastic below a fast running tap see
whether the falling water exerts a force
if it does what is the effect of the
force