Chapter 4: Revision

Chapter 4: Revision

Practice Makes Perfect!

Quick MC Questions!

...may the force be with you...

Multiple Choice

Identify which statement best describes Newton’s Third.

• If object A exerts a force on object B then object B exerts an equal but opposite force on object A.

• The acceleration of an object is equal to the net force acting on the object divided by the mass of the object.

• An object continues to move with uniform velocity unless an external force acts upon it.

• The square of an object’s Force is proportional to the cube of the object’s acceleration

Multiple Choice

What is tension in physics?

• A specific name for the force that an object, like your bed, exerts

• A specific name for the force that a car exerts

• A specific name for the force that a string or a rope exerts

Multiple Choice

In the image below we can see a skydiver who is said to have reached terminal velocity. Which of the following best outlines the concept of terminal velocity?

• A skydiver when they start to jump from a plane.

• A skydiver when they reach a constant velocity.

Multiple Choice

The normal force is ……………………………………………………

• the perpendicular contact force that a surface exerts on another surface.

• the parallel contact force that a surface exerts on another surface

• the net contact force that a surface exerts on another surface.

• always equal to the weight of an object.

Multiple Choice

What is the weight of an astronaut who has a mass of 90 kg on the moon? (Note: acceleration due to gravity of the moon is 1.62 N/kg)

• 145.8 N

• 90 N

Multiple Choice

Ahmed is sitting on the floor. His mass is 50 kg. What is the force of the floor on Ahmed?

• 50 N

• 490 N

Thank You

Hellooo Chapter 5: Vectors