Complete the table. Quantity Symbol SI unit F m a

The force acting on an object is defined as the product of mass and acceleration of the object and the SI unit of force is N . Mass of an object is defined as the inertia offered by the body and also it do not change its value anywhere in the universe. Acceleration is defined as the rate of change of velocity of a body. Quantity Symbol SI unit Force F N Mass m kg Acceleration a m s - 2

Draw the force diagram of a falling stone with the following forces acting on it. Weight of 8 N . Air resistance of 2 . 4 N .

The stone which is falling is being acted upon unbalanced forces. The resultant force of a body acting upon unbalanced forces will never be zero. The force diagram of the ball acting upon weight and air resistance is as follows: The weight of the ball will always be acting in the downwards direction and the air resistance will act in the opposite direction.

E M B I B E

Physics for Cambridge IGCSE workbook>Chapter 3 - Forces and Motion>Exercise 3.3>Q 4

EASY

Upper Secondary-IGCSE

IMPORTANT

Earn 100

Draw a diagram showing a body with four forces acting on it. Their resultant must be $4 N$ acting vertically downwards.

Important Questions on Forces and Motion

EASY

Upper Secondary-IGCSE

IMPORTANT

Physics for Cambridge IGCSE workbook>Chapter 3 - Forces and Motion>Exercise 3.4>Q 4

When a man is indoor skydiving, he will be floating, stationary. Imagine the same man to be floating in deep space. Compare the forces required for him to move horizontally in a building on Earth and in deep space. Ignore any differences due to the suit. Explain your answer.