AL Speed and Velocity Flashcard

Front

What is velocity?

Back

Velocity is a vector quantity that refers to the rate at which an object changes its position. It has both speed and direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity includes both speed and direction.

Front

Define instantaneous speed.

Back

Instantaneous speed is the speed of an object at a specific moment in time.

Front

Define average speed.

Back

Average speed is the total distance traveled divided by the total time taken.

Front

How do you calculate average speed for a round trip?

Back

Average speed for a round trip can be calculated using the formula: \( \text{Average Speed} = \frac{2 \times \text{Speed}_1 \times \text{Speed}_2}{\text{Speed}_1 + \text{Speed}_2} \) where Speed_1 and Speed_2 are the speeds for each leg of the trip.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be calculated using the formula: \( a = \frac{\Delta v}{\Delta t} \) where \( \Delta v \) is the change in velocity and \( \Delta t \) is the time taken.

Front

If a car accelerates from 0 to 60 km/h in 5 seconds, what is its acceleration?

Back

The acceleration is 12 km/h².

Front

What is a vector?

Back

A vector is a quantity that has both magnitude and direction, such as velocity or force.

Front

What is a scalar?

Back

A scalar is a quantity that has only magnitude and no direction, such as speed or mass.

Front

What happens when you add a South vector and an East vector?

Back

The resulting vector points Southeast (SE).