Physics for Kids: Understanding Force

What is force in physics?

• A kind of sound wave

• A measure of temperature

• A push or pull on an object

• A type of energy

What is the unit of measure for force?

• Meter

• Watt

• Newton

• Joule

Which equation represents Newton's Second Law of Motion?

• P = IV

• E = mc^2

• V = IR

• f = m * a

What does it mean when forces are in equilibrium?

• The forces are unbalanced

• The net force is zero

• The object is accelerating

• The object is changing shape

What is the force that pulls objects toward the Earth?

• Friction

• Tension

• Gravity

• Elastic

What type of force is exerted by a string or cable?

• Electromagnetic

• Tension

• Nuclear

• Friction

What is the acceleration due to gravity on Earth?

• 15 m/s2

• 20 m/s2

• 9.8 m/s2

• 5 m/s2

Which of the following is a type of force that decreases the velocity of an object?

• Thrust

• Torque

• Centripetal

• Drag

What is a vector?

• A force with only magnitude

• A type of energy

• A scalar quantity

• A force with magnitude and direction

Which force is associated with electric and magnetic fields?

• Friction

• Nuclear

• Electromagnetic

• Gravity