Question

Reflections on Concepts
1) Explain the reasons for the following. (ASI)
) Why dust comes out of a carpet when it is beaten with a stick?
b) Luggage kept on the roof of a bus is tied with a rope.
c) Why a pace bowler in cricket runs from a long distance before he bowls
2) Illustrate an example of each of the three laws of motion (AS)
3) Explain the following (AS)
a) Static Inertia b) Inertia of motion c) momentum
d) impulse
e)impulsive force​

Answer 1

Explanation:1

The dust comes out of a carpet when it is beaten with a stick because of the inertia of rest. Thus the carpet remain in the ret position and when it is beaten the dust come from the carpet .

2.Luggage ar tied on the roof of the bus to not to let the luggage to fall.Because of the inertia of rest the luggage tends to be rest position .When the bus will move if it is not tied then it will fall down.

3.Ex.i.1st law:-Football rolling down the slope at uniform motion until an external force is applied.

ii.2nd law :-it is easy to pull empty shop cart than full one, because full one has more mass.

iii.3rdlaw:-ball hitting the wall comes back to the thrower.

4