Acceleration-1

The video tutorial explains acceleration as the rate of change in an object's velocity, which can be an increase or decrease in speed or a change in direction. Acceleration is a vector quantity, meaning it has both magnitude and direction. The video provides examples, such as a baseball starting or stopping, to illustrate how acceleration works. It also discusses how acceleration can affect an object's velocity depending on the direction of the acceleration relative to the velocity. Finally, the video summarizes the three ways acceleration can change velocity: by altering speed, direction, or both.

What does acceleration refer to in physics?

• Only a decrease in speed

• Any change in an object's velocity

• A change in direction only

• Only an increase in speed

How does acceleration affect an object if it is in the same direction as the velocity?

• It increases the object's speed

• It changes the object's direction

• It decreases the object's speed

• It causes the object to stop

What happens when the direction of acceleration is opposite to the direction of velocity?

• The object changes direction

• The object speeds up

• The object maintains its speed

• The object slows down

In what way can acceleration change an object's velocity?

• By changing only the speed

• By changing only the direction

• By changing both speed and direction

• By keeping the velocity constant

If an object comes to a stop, is it experiencing acceleration?

• Yes, because it is gaining speed

• No, because it is not moving

• No, because acceleration only increases speed

• Yes, because its velocity is changing