## Newton’s 2nd Law Questions

Here are the steps to solving a problem involving Newton’s 2nd law. Step 1: Draw a free body diagram – where possible, sketch a free body diagram to represent: the body isolated from other objects the forces acting on the… Continue Reading

## Free-Body Diagrams in Two-Body Motion

Students are often confused about the forces in drawing free-body diagrams, especially so when they have to consider the different parts of multiple bodies in motion. Two-Body Motion Let’s consider the case of a two-body problem, where, a force F is applied… Continue Reading

## Newton’s 3rd Law

Activity 1: Propeller Cart (Predict, Observe and Explain) Activity 2: Untied Balloon A balloon is filled with air and released with its mouth downwards. Explain why it moves upwards.                       why it stops rising after some time.    Activity 3:… Continue Reading

## Elevator Physics

In a recent IP3 class on Newton’s 2nd Law, the students were presented the “Elevator Problem” based on the THINK Cycle approach – a version of inquiry-based learning that was started in Temasek Junior College, Singapore. The “Elevator Problem” is a physics… Continue Reading