## The Force of Gravity

In gravity, we will discuss the gravitational field, free falling, lift and pulley. Under gravitational field, we will discuss what is gravitational field, gravitational field strength, gravitational acceleration and weight are. In free falling, we will discuss dropping object from a high place and launching object upward. We will also discuss the graphs of motion … Read more

## Impulse and Impulsive Force

In previous lesson, we have discussed Newton’s second law of motion. When a net force is applied on an object, the acceleration of the object is directly proportional to the net force and inversely proportional to the mass of the object. From Newton’s second law, we deduced the equation F=ma. We have also discussed friction, … Read more

## Effects of Force and Newton’s Second Law

“Effects of force” is one of the most important sub-topics in Force and Motion. Under effects of force, there are 4 main subtopics: Newton’s second law, Newton’s third law, impulse and safety features of vehicles. In this lesson, we will only discuss Newton’s 1st and 2nd law. We will discuss “impulse” and “safety features of … Read more

## Understanding Momentum

In previous lesson, we have discussed inertia, including what is inertia, Newton’s first law of motion, situation involving inertia, mass and inertia and reducing negative effects of inertia. In this lesson, we will discuss momentum, including the principle of conservation of momentum and its applications. Under principle of conservation of momentum, we will discuss how … Read more

## Understanding Inertia

Introduction Force is a subtitle in Force and Motion, the second chapter in SPM form 4 physics. In force, we have 5 main subtopics: inertia, momentum, effects of force, gravity and force as a vector. In inertia, we will discuss Newton’s First Law, situation involving inertia, mass and inertia and reducing negative effects of inertia. … Read more

## Velocity-Time Graph

In previous lesson, we have learned how to analyse a displacement-time graph and finding velocity from a displacement-time graph, where the velocity is equal to the gradient of the graph. In this lesson, we are going to proceed to velocity-time graph, where we will learn how to analyse a velocity-time graph, how to solve the … Read more

## Displacement-Time Graph

In this lesson, we will proceed to graph of motion, where we will focus on the displacement-time graph, including analysis of the graph and solving some calculation questions. There are 3 types of Motion Graph: the displacement-time graph, the velocity-time graph and the acceleration-time graph. All these graphs look similar. However, they are quite different, … Read more

## Stopwatch, Thermometer, Voltmeter and Ammeter

In previous lesson, we have discussed micrometer. In this lesson, we will discuss a few more measuring instruments, namely: stopwatch, ammeter, voltmeter and thermometer. In stopwatch, we will discuss 2 types of stopwatch: the analogue stopwatch and the digital stopwatch. We will also discuss the sensitivity of stopwatches and how to take reading from a … Read more

## Micrometer Screw Gauge

In previous lesson, we have discussed vernier caliper. In this lesson, we will focus on micrometer, where we will discuss the sensitivity of micrometer, the label of the parts of a micrometer and the function of some of the parts. We will also discuss how to take readings from a micrometer such as how to … Read more

## Vernier Caliper

In previous lesson, we have discussed measurement, including error, consistency, accuracy and sensitivity. In this lesson, we will proceed to measuring instrument. In measuring instrument, we will cover vernier caliper, micrometer, stopwatch, ammeter, voltmeter and thermometer. In this lesson, we will focus on Vernier caliper, where we will discuss the sensitivity of vernier caliper, label … Read more