Back to the full dot-point answer
SingaporeScienceQuick questions
Forces and Motion
Quick questions on Forces as pushes and pulls: N(T) Science Forces and Motion
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is common forces to know?Show answer
You should know these common forces:
What is friction?Show answer
Friction can be useful or a nuisance. It is useful when it grips: friction lets your shoes grip the floor so you do not slip, and lets brakes stop a bike. It is unhelpful when it slows machines down and wears parts out. We add oil or use wheels to reduce friction when we do not want it, and we use rough surfaces or rubber to increase it when we do.
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.