Time and Motion Concepts

What is the difference between speed and velocity?

• Speed is a direction, velocity is a magnitude.

• Speed is scalar, velocity is vector.

• Speed and velocity are the same thing.

• Speed is a vector, velocity is scalar.

Explain how to calculate speed using the formula.

• Speed = Distance / Time

• Speed = Distance + Time

• Speed = Time / Distance

• Speed = Distance x Time

Define distance-time graphs and how they represent motion.

• Distance-time graphs show the weight of an object over time.

• Distance-time graphs represent motion by displaying the color of an object as it moves.

• Distance-time graphs depict the temperature of an object as it changes with time.

• Distance-time graphs represent motion by showing how the distance an object has traveled changes over time, with the slope indicating speed.

How can you determine the speed from a distance-time graph?

• Count the number of grid squares

• Calculate the gradient of the line on the distance-time graph.

• Look at the color of the graph

• Measure the width of the graph

What does uniform motion mean?

• An object moving in a straight line at an increasing speed.

• An object moving in a zigzag pattern at varying speeds.

• An object moving in a circular path at a constant speed.

• An object moving in a straight line at a constant speed.

Give an example of an object in uniform motion.

• A bicycle going uphill

• A boat in rough waters

• A car traveling on a highway at a constant speed of 60 mph.

• A plane taking off

If an object is moving at a constant speed, what can you say about its distance-time graph?

• The distance-time graph will be a straight line.

• The distance-time graph will be a spiral.

• The distance-time graph will be a zigzag line.

• The distance-time graph will be a parabola.

How is velocity different from speed in uniform motion?

• Velocity is measured in kilometers per hour, while speed is measured in meters per second.

• Velocity is constant in uniform motion, while speed varies.

• Velocity is a scalar quantity, while speed is a vector quantity.

• Velocity includes direction, while speed does not.

Explain the concept of acceleration in relation to time and motion.

• Acceleration is the rate of change of velocity with respect to time.

• Acceleration is the same as velocity.

• Acceleration is constant in all situations.

• Acceleration is the rate of change of speed with respect to time.

Describe the motion of an object when its speed is increasing.

• The object is stationary.

• The object is moving at a constant speed.

• The object is decelerating.

• The object is accelerating.