Understanding Motion Systems

What is the definition of motion?

• Motion is the change in position of an object over time.

• Motion is the weight of an object in space.

• Motion refers to the color of an object.

• Motion is the speed of an object at rest.

Explain the difference between speed and velocity.

• Speed is scalar; velocity is vector (includes direction).

• Speed can be negative while velocity cannot.

• Velocity measures distance only, not direction.

• Speed is always greater than velocity.

What are the three types of motion?

• Uniform, Non-uniform, Accelerated

• Linear, Circular, Periodic

• Static, Dynamic, Kinetic

• Translational, Rotational, Oscillatory

Define uniform motion and give an example.

• Uniform motion is the motion of an object that changes direction frequently, e.g., a person walking in a crowded area.

• Uniform motion is when an object speeds up and slows down, e.g., a roller coaster ride.

• Uniform motion occurs when an object moves in a circular path, e.g., a car driving around a roundabout.

• Uniform motion is the motion of an object at a constant speed in a straight line, e.g., a car traveling at 60 km/h on a straight road.

What is acceleration and how is it calculated?

• Acceleration is the total distance traveled divided by time.

• Acceleration is the speed of an object at a specific moment.

• Acceleration is the change in mass over time.

• Acceleration is the rate of change of velocity, calculated as (v - u) / t.

Describe the concept of inertia.

• Inertia is the force that causes an object to move faster.

• Inertia is the measure of an object's temperature.

• Inertia is the ability of an object to change its shape.

• Inertia is the tendency of an object to resist changes in its motion.

What is Newton's first law of motion?

• An object will change its direction only when a force is applied.

• An object in motion will eventually stop without any external force.

• An object will remain at rest or in uniform motion unless acted upon by an external force.

• An object will accelerate if no forces are acting on it.

Explain the relationship between force and motion.

• Force causes changes in motion, as described by Newton's laws.

• Motion can occur without any force acting on it.

• Force is unrelated to motion.

• Force only affects stationary objects.

What is the formula for calculating distance?

• Distance = Speed + Time

• Distance = Speed - Time

• Distance = Time ÷ Speed

• Distance = Speed × Time

What role does friction play in motion?

• Friction has no effect on motion whatsoever.

• Friction accelerates motion and increases speed.

• Friction only occurs in liquids and gases.

• Friction opposes motion and enables control over movement.