1) Explain the reasons for the following. (AS1)
a) 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?
Answers
Answer:
Due to the dust having inertia of rest it doesnt move from its place. This is bcz luggage on its roof tends to continue in the state of motion due to inertia of motion. To avoud falling of luggage it is tiedWhile the bus is moving, luggage tends to remain in inertia of motion state. When the bus stops, the luggage tends to resist the change and due to inertia of motion it moves forward and may fall off. That's why it is advised to tie any luggage kept on the roof of a bus with a rope.
Explanation:
pace bowler in cricket runs fast from a long distance before he bowls because when he run the bowler gains inertia... so by inertia of motion he can gain momentum.... by gaining momentum the bowler can bowl rhe ball with more inertia means with more speed .
Answer:
option a=An object's inertia tends to resist any change in its state of rest or motion. If a carpet is beaten with a stick then the carpet begins to move. ... The dust particles remain in a state of rest, while the carpet moves, as per Newton's first law of motion. The particles of dust thus emerge from the carpet.
option b=The luggage kept on the roof of a bus is tied with a rope because it can fall as the bus moves forward.
option c=the pace bowler in cricket runs fast from a long distance before he bowls because when he run the bowler gains inertia... so by inertia of motion he can gain momentum.... by gaining momentum the bowler can bowl rhe ball with more inertia means with more speed.