Question

Write 2 observations of various situations created by you on

different kinds of friction that exists during activities like

skating, riding a bike, flying a kite, etc. on another A4 size

sheet.​

Answer 1

Answer:

Friction is the force that resists motion when the surface of one object comes in contact with the surface of another.

Explanation:

friction in our day to day activities:

• Walking – We can walk only if we apply frictional force. Friction is what holds your shoe to the ground. The friction present on the ice is very little, this is the reason why it is hard to walk on the slippery surface of the ice.
• Lighting a matchstick – When the head of the matchstick is rubbed against a rough surface, heat is generated and this heat converts red phosphorous to white phosphorous. White phosphorous is highly inflammable and the match stick ignites. Sometimes, matchsticks fail to ignite due to the presence of water. Water lowers friction.
• Writing – A frictional force is created when the tip of the pen comes in contact with the surface of the paper. Rolling friction is what comes into play while writing with a ballpoint pen while sliding friction arises when one writes with a pencil.