Speed, Velocity and Acceleration

Front

What is speed?

Back

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

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction. It includes both the magnitude (how fast) and the direction of motion.

Front

What is acceleration?

Back

Acceleration is the rate at which an object's velocity changes over time. It can involve speeding up, slowing down, or changing direction.

Front

Why does a car accelerate when it goes around a corner?

Back

A car accelerates when it goes around a corner because it is changing direction, even if its speed remains constant.

Front

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

Back

False. Acceleration can occur when an object speeds up, slows down, or changes direction.

Front

What is the difference between speed and velocity?

Back

The main difference is that speed is a scalar quantity (only magnitude), while velocity is a vector quantity (magnitude and direction).

Front

Give an example of an object that is accelerating.

Back

A toy train traveling in a circle is an example of an accelerating object because its direction is constantly changing.

Front

What happens to the velocity of an object in uniform circular motion?

Back

In uniform circular motion, the speed remains constant, but the velocity changes due to the continuous change in direction.

Front

What is the formula for calculating acceleration?

Back

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

Front

If a car travels 100 km in 2 hours, what is its speed?

Back

Speed = distance / time = 100 km / 2 hours = 50 km/h.