question_answer9)
Give two applications of inertia in
daily life.
question_answer11)
Why can a small mass such as a bullet
kill a person when fired from a gun?
question_answer12)
Why does the pillion rider fall forward
when brakes are applied?
question_answer16)
Why does a boat tend to leave the
shore, when passengers are alighting from it?
question_answer18)
Describe our walking in terms of
Newton's third law of motion.
question_answer19)
Give few examples of Newton's third law
of motion.
question_answer29)
Describe an activity to demonstrate Newton's
third law of motion.
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What will happen if the hit is strong
enough?
What will happen to the remaining coins
once the lower coin is removed?
How much force does the table exert on
the ball to bring it to rest?
Heat the test tube with a burner until water
vaporises and the cork blows out.
Write any two of your observations.
Ask your friend to hold the other end
of the thread or fix it on a wall at some distance.
This arrangement is shown in the
figure.
Now remove the thread tied on the neck
of balloon. Let the air escape from the mouth of the balloon. Observe the
direction in which the straw moves. Give reason.
What happens to the cork?
Why does it happen?
What might happen in case, cork was too
tightly closed?
When a force is applied through the
free end of the spring balance A, the reading on the spring balance A is 15 g
wt. What will be the measure of the reading shown by spring balance B?
Write reasons for your answer.
Name the force which balance A exerts on
balance B and the force of balance B on balance A.
Find from graph.
it acceleration.
the force acting on the body
the change in momentum of body in 2 seconds
after start.
What are the values of Manoj?
With what values is his wife equipped with?
How will they find their total displacement?
