Unit 2 Review - Forces

Front

What is the sum of all forces acting on an object called?

Back

Net Force

Front

What is the term for the amount of matter in an object that never changes regardless of location?

Back

Mass

Front

In which direction does friction act relative to a moving object?

Back

Opposite direction

Front

What is the formula to calculate the velocity of an object in free fall after a certain time?

Back

v = gt, where g is the acceleration due to gravity (approximately 9.8 m/s²).

Front

If a ball drops from a height and takes 2.0 seconds to hit the ground, what is its velocity upon impact?

Back

19.6 m/s downward.

Front

What does a free body diagram represent?

Back

The forces acting on an object.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N)

Front

What is the acceleration due to gravity on Earth?

Back

Approximately 9.8 m/s².

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as weight = mass × gravity.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the object's motion.