Speed, Velocity, & Acceleration

Front

What is speed?

Back

Speed is the distance traveled per unit of time, typically measured in meters per second (m/s) or miles per hour (mph).

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction, combining both magnitude and direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, measured in meters per second squared (m/s²).

Front

Why does a car accelerate when it goes around a corner at a constant speed?

Back

The car accelerates because it is changing direction, which alters its velocity.

Front

True or False: Acceleration only occurs when an object speeds up.

Back

False. Acceleration can also occur when an object slows down or changes direction.

Front

How do you calculate acceleration?

Back

Acceleration can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

If a roller coaster accelerates from 6.0 m/s to 70 m/s in 4 seconds, what is the acceleration?

Back

The acceleration is 16 m/s².

Front

What is the formula for time in relation to distance and speed?

Back

The formula for time is T = D/S, where D is distance and S is speed.

Front

If a golf ball accelerates at 15 m/s² from 0 m/s to 50 m/s, how long does it take to accelerate?

Back

It takes 3.3 seconds to accelerate.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).