Understanding Speed, Velocity, and Displacement

The video introduces kinematic concepts, focusing on motion without considering its causes. It covers position, displacement, and distance, explaining these in one dimension and extending to two and three dimensions. Practical examples illustrate calculations of displacement and distance. The video also differentiates between average and instantaneous speed and velocity, emphasizing the role of direction in velocity. It concludes with IB-style questions and a summary of key points.

What is the primary focus of kinematics?

• The study of forces

• The study of motion without its causes

• The effects of motion

• The causes of motion

In one-dimensional motion, what does a positive position indicate?

• Movement downwards

• Movement upwards

• Movement to the right

• Movement to the left

How is displacement different from distance?

• Neither includes direction

• Both include direction

• Distance includes direction, displacement does not

• Displacement includes direction, distance does not

What is the displacement from Joe's house to the school if Joe's house is at -50 meters and the school is at 100 meters?

• 50 meters to the right

• 150 meters to the right

• 150 meters to the left

• 50 meters to the left

How do you calculate average speed?

• Velocity divided by time

• Acceleration divided by time

• Distance divided by time

• Displacement divided by time

What additional information does velocity provide compared to speed?

• Direction

• Magnitude

• Time

• Distance

What does instantaneous speed measure?

• Average speed over a trip

• Speed at a specific moment

• Total distance traveled

• Average velocity over a trip

If a car travels 20 meters per second east, what is this an example of?

• Displacement

• Acceleration

• Velocity

• Speed

What is the magnitude of displacement if the radius of a circular track is 2 meters and the path length is 8 meters?

• 2 meters

• 4 meters

• 6 meters

• 8 meters

What does the odometer in a car measure?

• Total distance traveled

• Average speed

• Instantaneous speed

• Displacement