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SingaporePhysicsQuick questions
Forces and Dynamics
Quick questions on Newton's laws of motion explained: O-Level Physics
4short 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 putting the laws together?Show answer
The first law is the special case of the second when (then , so velocity is constant). The second law lets you calculate motion from forces. The third law explains how objects push off each other, from walking to rockets.
What is q1?Show answer
State Newton's first law of motion. [2 marks]
What is q2?Show answer
A resultant force of acts on a mass. Calculate the acceleration. [2 marks]
What is q3?Show answer
A person stands on the ground. Identify the action-reaction pair involving the person's feet and the ground. [2 marks]
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