Exploring Linear Motions

What is the difference between speed and velocity?

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

• Speed is a type of velocity.

• Speed includes direction, while velocity does not.

• Velocity measures distance only.

If a car travels 100 meters in 5 seconds, what is its speed?

• 15 meters per second

• 30 meters per second

• 20 meters per second

• 25 meters per second

Define acceleration in the context of motion.

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

• Acceleration is the force applied to an object.

• Acceleration is the rate of change of velocity over time.

• Acceleration is the distance traveled over time.

What does a negative acceleration indicate about an object's motion?

• An object is speeding up.

• An object is at rest.

• An object is decelerating or slowing down.

• An object is moving in a circular path.

How can you represent linear motion on a graph?

• Use a distance-time graph with distance on the y-axis and time on the x-axis.

• Represent linear motion using a temperature-time graph.

• Plot acceleration against distance on a graph.

• Use a speed-time graph with speed on the y-axis and time on the x-axis.

What does the slope of a distance-time graph represent?

• The time taken for an object to travel.

• The acceleration of an object.

• The distance covered by an object.

• The speed or velocity of an object.

State Newton's First Law of Motion.

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

• An object will remain in motion until it collides with another object.

• An object will change its velocity only if it is in motion.

• An object will accelerate unless a force is applied.

How does Newton's Second Law relate force, mass, and acceleration?

• Mass is equal to force times acceleration (m = F * a).

• Force is equal to mass times acceleration (F = m * a).

• Acceleration is equal to force divided by mass (a = F / m).

• Force is equal to acceleration divided by mass (F = a / m).

What is the formula for calculating distance?

• Distance = Time ÷ Speed

• Distance = Speed + Time

• Distance = Speed - Time

• Distance = Speed × Time

Explain the difference between distance and displacement.

• Distance is a vector quantity, while displacement is a scalar quantity.

• Displacement measures the total path traveled.

• Distance is a scalar quantity, while displacement is a vector quantity.

• Distance is always greater than displacement.