q.6 where does friction help us?\na. wearing out parts of a machine.\nb. stop a car.\nc. writing with a…

q.6 where does friction help us?\na. wearing out parts of a machine.\nb. stop a car.\nc. writing with a pencil.\nd. both b and c.

q.6 where does friction help us?\na. wearing out parts of a machine.\nb. stop a car.\nc. writing with a pencil.\nd. both b and c.

Answer

Brief Explanations:

Friction helps in writing with a pencil as it allows the graphite to stick to the paper. It also helps in stopping a car as the friction between the brakes and the wheels slows down the vehicle. Wearing out parts of a machine is a negative effect of friction, not a helpful one.

Answer:

d. Both B and C