Tutorial on Position, Velocity, and Acceleration

These flashcards cover the key concepts related to position, velocity, and acceleration based on the tutorial sections.

What is the definition of velocity in physics?

Velocity is defined as the change in position over time, and it is always a vector quantity.

What does a velocity vector in i-hat and j-hat notation look like for a speed of 3 mph?

The velocity vector can be represented as v = +3 mph i-hat.

How is acceleration defined?

Acceleration is defined as the change in the velocity vector in time.

What does the change in velocity vector indicate regarding acceleration?

The direction of the change in velocity vector indicates the direction of acceleration.

What happens to a ball's velocity and acceleration at the turnaround point when thrown upward?

At the turnaround point, the velocity is zero, but the acceleration is not zero because it is affected by gravity.

How can you measure speed using a photogate?

Speed can be measured using a photogate by recording the time it takes an object to pass through the gate.

What is the relationship between acceleration and velocity when an object is moving straight and speeding up?

When an object is speeding up, the direction of acceleration and velocity are in the same direction.

What is the relationship between acceleration and velocity when an object is moving straight and slowing down?

When an object is slowing down, the direction of acceleration is opposite to the direction of velocity.

What are position, velocity, and acceleration graphs used for in physics?

They are used to visually represent the motion of an object over time, showing how its position changes, how fast it is moving, and how its speed is changing.

If a glider is moving up a ramp and slows down, what can be inferred about the direction of its acceleration?

The acceleration is directed downwards, opposite to the direction of velocity.