Understanding Weight, Mass, and Forces

What is the main difference between weight and mass?

• Weight is the amount of matter in an object; mass is the force acting on it.

• Weight and mass are the same and can be used interchangeably.

• Weight is a force dependent on gravity; mass is a measure of matter that is constant.

• Mass is dependent on gravity; weight is a constant measure of matter.

How do you calculate weight using gravity?

• Weight = Mass + 9.81 m/s²

• Weight = Mass - 9.81 m/s²

• Weight = Mass ÷ 9.81 m/s²

• Weight = Mass × 9.81 m/s²

What is the unit of measurement for mass?

• joule (J)

• kilogram (kg)

• meter (m)

• liter (L)

What is the unit of measurement for weight?

• meters

• joules

• liters

• grams, kilograms, pounds, ounces

Explain what contact force is.

• Contact force is a type of energy that can be stored in objects.

• Contact force is the force exerted by gravity on an object.

• Contact force is a force that acts between two objects that are in physical contact with each other.

• Contact force is a force that acts at a distance without physical contact.

How does mass affect the force experienced by an object?

• Mass directly affects the force experienced by an object; greater mass results in greater force for the same acceleration.

• Force is independent of mass and only depends on velocity.

• Mass has no effect on the force experienced by an object.

• Greater mass results in less force for the same acceleration.

If an object has a mass of 10 kg, what is its weight on Earth?

• 98.1 N

• 100 N

• 10 N

• 9.81 N

What happens to weight if you go to the Moon?

• Your weight doubles compared to your Earth weight.

• Your weight remains the same as on Earth.

• Your weight increases to about 2 times your Earth weight.

• Your weight decreases to about 1/6th of your Earth weight.

Can you give an example of contact force in everyday life?

• Pushing a door open

• Pulling a chair

• Dropping a ball

• Opening a window

What is the formula for calculating weight?

• Weight = Mass + 9.81 m/s²

• Weight = Mass ÷ 9.81 m/s²

• Weight = Mass × 9.81 m/s²

• Weight = Mass - 9.81 m/s²