Acceleration

Front

What is acceleration?

Back

Acceleration is defined as the change in velocity divided by the time interval.

Front

Does acceleration only occur when an object speeds up?

Back

No, acceleration can also occur when an object slows down or changes direction.

Front

What happens to the direction of velocity when a car rounds a corner at a constant speed?

Back

The direction of velocity changes, which means the car is accelerating.

Front

If a golf ball rolls up a hill with an initial speed of 2 m/s and slows at a rate of 0.5 m/s², what is its velocity after 2 seconds?

Back

The velocity after 2 seconds is 1 m/s.

Front

What is the formula for average acceleration?

Back

Average acceleration is calculated as (final velocity - initial velocity) ÷ time.

Front

What units are used to measure acceleration?

Back

Acceleration is measured in meters per second squared (m/s²).

Front

What is the difference between positive and negative acceleration?

Back

Positive acceleration indicates an increase in velocity, while negative acceleration (deceleration) indicates a decrease in velocity.

Front

Can an object be accelerating if its speed is constant?

Back

Yes, if the object is changing direction, it is still accelerating even if its speed remains constant.

Front

What is the relationship between acceleration and net force?

Back

According to Newton's second law, acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass (F=ma).

Front

How does mass affect acceleration?

Back

For a given force, an increase in mass will result in a decrease in acceleration.