Sci8 Unit 2 Motion and Forces

Front

What is the net force on an object if multiple forces are acting on it?

Back

The net force is the vector sum of all the individual forces acting on the object.

Front

Define acceleration in the context of motion.

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken.

Front

What does a negative acceleration indicate about an object's motion?

Back

A negative acceleration indicates that the object is slowing down or decelerating.

Front

What is the formula for calculating force?

Back

Force is calculated using the formula: Force = mass × acceleration (F = ma).

Front

If a 20 kg bike accelerates at 10 m/s², what is the force acting on it?

Back

The force acting on the bike is 200 N.

Front

What is the significance of the direction of net force?

Back

The direction of the net force determines the direction of the object's acceleration.

Front

What is the relationship between mass and acceleration in Newton's second law?

Back

According to Newton's second law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What does a distance-time graph represent?

Back

A distance-time graph represents how the distance traveled by an object changes over time.

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.