Force and Motion

What defines motion?

• Change in color over time
• Change in position with respect to time
• Change in size
• Change in shape

In the car example, what are the passengers in motion relative to?

• The driver
• Co-passengers
• Trees and light posts
• Seat belt

Motion is said to occur when an object's position changes with respect to

• Time
• Light
• Reference points

What type of force causes motion in a body at rest?

• Balanced force
• Unbalanced force

Motion and rest are considered:

• Identical concepts
• Random
• Constant
• Relative

In translatory motion, an object is:

• Rotating
• Permanently displaced from original position
• Vibrating
• Always at rest

Which of these is a type of translatory motion?

• Circular and spiral
• Rectilinear and curvilinear
• Upward and downward
• Static and dynamic

What is the state of a person inside a moving car compared to the driver?

• In motion
• In vibration
• At rest
• Accelerating

Reference points help in understanding:

• Weather changes
• Relative motion and rest
• Types of materials
• Color perception

Density is defined as mass per unit area.

• True

• False