Physics 1st Semester Final

Front

What is the resultant of a pair of parallel forces of 6N and 10N?

Back

Either 16N or 4N.

Front

What is the rate at which velocity changes with time called?

Back

Acceleration.

Front

Is wind velocity a vector quantity?

Back

True.

Front

What is a hypothesis?

Back

An educated guess that has yet to be proven by experiment.

Front

Is the amount of matter in an object called its weight?

Back

False; it is called mass.

Front

What is the formula for calculating acceleration?

Back

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

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is a vector quantity?

Back

A quantity that has both magnitude and direction.

Front

What is the principle of superposition in physics?

Back

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

Front

What does Newton's first law of motion state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.