Exploring Time and Velocity

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What is time in the context of motion?

Time is the duration in which motion occurs.

Why is time important in calculating speed?

Time is needed to determine how long it takes to travel a certain distance, which helps calculate speed.

What is the primary unit of time used in speed calculations?

The primary unit is seconds.

What is velocity?

Velocity is speed with a specific direction.

How is velocity different from speed?

Velocity includes direction, whereas speed does not.

Why can velocity be negative?

Velocity can be negative because direction influences it, indicating movement in the opposite direction.

What does it mean if an object has a velocity of 10 m/s north?

The object moves 10 meters every second towards the north.

How does one calculate average velocity?

Average velocity = Total displacement ÷ Total time.

What is instantaneous velocity?

The velocity of an object at a specific moment in time.

Explain the term 'displacement' in velocity calculations.

Displacement is the change in position of an object, taking direction into account.

Can velocity change even if speed remains constant?

Yes, if the direction of motion changes.

What happens to velocity if both speed and direction change?

Velocity changes in both magnitude and direction.

If a cyclist travels 100m north in 10 seconds, what is their velocity?

10 m/s north.

What is the velocity of an object at rest?

0 m/s.

What is required for an object to have a constant velocity?

The object must have a constant speed and travel in a straight line (no change in direction).