F4 Chapter 2.3 Free Fall Motion & 2.4 Inertia

An object drop from a height 10m and gravitational acceleration is given as g. If the same object is drop from a height of 20m, what will be the value of gravitational acceleration in term of g

• 5g

• g

• 2g

A leaf and a tennis ball falling freely in a vacuum. Which statement is correct?

• The leaf and the tennis ball fall with constant velocity.

• The gravitational acceleration for both the leaf and the tennis ball are the same.

• The gravitational force acting on the leaf and the tennis ball are the same.

• The leaf and the tennis ball have the same kinetic energy.

What happen to the acceleration of a ping pong ball and a feather when they are released from same height in vacuum?

• Both objects have zero acceleration

• Both objects have same acceleration

• The acceleration of ping pong ball is smaller than feather

• The acceleration of ping pong ball is greater than feather

Diagram shows a man jerking a table cloth. The glass remains on the table because of

• momentum

• density

• mass

• inertia

Diagram below shows two tops in battle. What cause the top of orange colour take win the battle?

• Yellow top has smooth surface

• Yellow top has greater mass

• Yellow top has smaller base

• Yellow top has more energy

Which of the following situation involve a largest inertia?

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• 
• 
• 

• 3.2s

• 4.8s

• 5.6s

• 7.1s

Which of the following diagram is NOT about inertia in daily life?

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• 
• 
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Which of the following is correct about free falling?

• There is no frictional force act on the object when the object fall in a gravitational field

• The object experiences free fall if the motion of the object is affected by gravitational force only.

• Area of the object affect the time of the object lands in free falling.

• Mass of the object affect the time of the object lands in free falling.

What is the factor affecting the speed of the skydiver falling down?

• mass of the skydiver

• surface area of the skydiver

• momentum of the skydiver

• inertia of the skydiver