Matter & Energy Review

What do we call the path followed by a moving object?

• Velocity

• Trajectory

• Distance

Which instrument measures force?

• Speedometer

• Thermometer

• Dynamometer

What is the unit of force?

• 
  

• Newton

• Joule

• Watt

If an object moves in a straight line, its movement is called:

• Curvilinear

• Straight

• Circular

What force opposes motion when two surfaces touch?

• Gravity

• Magnetism

• Friction

Speed with direction is called:

• • Acceleration

• Velocity

• • Distance

What is the change in velocity over time called?

• Acceleration

• Speed

• Force

Forces that act without touching objects are called:

• Contact forces

• Distance forces