FIZIX 1st Sem Review - Basics (PEMDAS, Units, Variables, Trig)

Front

What does PEMDAS stand for in mathematics?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). It is the order of operations used to solve mathematical expressions.

Front

What is the formula for calculating distance when acceleration is constant?

Back

The formula is x = v₀t + 1/2at², where x is distance, v₀ is initial velocity, a is acceleration, and t is time.

Front

What is the unit of measurement for distance in the International System of Units (SI)?

Back

The unit of measurement for distance in SI is the meter (m).

Front

What is the definition of initial velocity (v₀)?

Back

Initial velocity (v₀) is the velocity of an object at the start of a time interval, typically when time is zero.

Front

What is the equation used to find the final velocity (v) of an object under constant acceleration?

Back

The equation is v = v₀ + at, where v is final velocity, v₀ is initial velocity, a is acceleration, and t is time.

Front

What is the significance of the acceleration due to gravity (g)?

Back

The acceleration due to gravity (g) is approximately 9.8 m/s² and represents the acceleration of an object in free fall towards the Earth.

Front

How do you calculate the distance traveled by an object when given its final and initial velocities and time?

Back

Use the equation x = 1/2(v + v₀)t, where x is distance, v is final velocity, v₀ is initial velocity, and t is time.

Front

What is the formula for calculating the final velocity squared?

Back

The formula is v² = v₀² + 2ax, where v is final velocity, v₀ is initial velocity, a is acceleration, and x is distance.

Front

What does the symbol 'a' represent in physics equations?

Back

In physics equations, 'a' represents acceleration, which is the rate of change of velocity over time.

Front

What is the relationship 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.