Category 2: Part 1 Force, Motion and Energy

Front

What is the definition of velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is net force?

Back

Net force is the total force acting on an object after all the forces are combined.

Front

How do you calculate net force when multiple forces are acting on an object?

Back

To calculate net force, add all the forces acting in one direction and subtract the forces acting in the opposite direction.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

If a car travels 100 meters in 5 seconds, what is its average speed?

Back

Average speed = 100 meters / 5 seconds = 20 m/sec.

Front

What does it mean if an object is accelerating?

Back

An object is accelerating if it is changing its velocity, which can mean increasing speed, decreasing speed, or changing direction.

Front

What is the formula for calculating acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.

Front

If a car's velocity changes from 20 m/sec to 50 m/sec in 10 seconds, what is its acceleration?

Back

Acceleration = (50 m/sec - 20 m/sec) / 10 sec = 3 m/sec².