Understanding Acceleration Concepts

What is positive acceleration?

• Positive acceleration is the decrease in velocity of an object over time.

• Positive acceleration refers to a constant speed without any change in velocity.

• Positive acceleration is the increase in velocity of an object over time.

• Positive acceleration is the change in direction of an object's motion.

What is negative acceleration?

• Negative acceleration is the rate of decrease of velocity, indicating an object is slowing down.

• Negative acceleration refers to an object's constant speed.

• Negative acceleration means an object is speeding up.

• Negative acceleration is the same as positive acceleration.

Give an example of positive acceleration in everyday life.

• A bicycle coming to a stop.

• A ball rolling down a hill at a constant speed.

• A train slowing down at a station.

• A car accelerating from a stoplight.

How does negative acceleration affect the speed of an object?

• Negative acceleration has no effect on the speed of an object.

• Negative acceleration increases the speed of an object.

• Negative acceleration decreases the speed of an object.

• Negative acceleration causes the object to stop immediately.

If a car speeds up from 20 m/s to 50 m/s, is this positive or negative acceleration?

• Negative acceleration

• Constant speed

• No acceleration

• Positive acceleration

What happens to an object's velocity during negative acceleration?

• The object's velocity remains constant.

• The object's velocity increases.

• The object's velocity fluctuates randomly.

• The object's velocity decreases.

How do you differentiate between acceleration and deceleration?

• Acceleration increases speed; deceleration decreases speed.

• Acceleration is the same as deceleration.

• Deceleration is a type of acceleration.

• Acceleration only occurs in a downward direction.

What are the units used to measure acceleration?

• kilometers per hour (km/h)

• feet per second squared (ft/s²)

• meters per second squared (m/s²)

• meters per second (m/s)