Physics Formulas and Concepts

These flashcards cover key physics formulas and concepts, providing definitions and explanations to aid in exam preparation.

What is the formula for weight?

Weight = mass * gravity

How do you calculate velocity?

displacement / time (V = S/t)

What is the formula for acceleration?

velocity / time (a = V/t)

What is the equation for force?

mass * acceleration

What is the formula for work?

Force * distance

How is kinetic energy calculated?

(mass)(velocity)² / 2

What is the formula for potential energy?

(mass)(gravity)(height)

What does the kinematic formula V = Vi + at represent?

It calculates final velocity (V) based on initial velocity (Vi), acceleration (a), and time (t).

What does S = (Vi + Vf)/2 * t calculate?

It calculates displacement (S) when acceleration is unknown.

What is the formula for mechanical advantage using pistons?

a2 * d2 = a1 * d1

What does the ideal mechanical advantage (MA) of a vise represent?

MA = (2 * pi * length of handle) / (pitch of thread)

What is the formula for multiple lines in pulleys?

F = eW / n, where e = efficiency, W = weight, and n = number of ropes.

What is the lever equation?

X * W = L * F, where X is distance, W is weight, L is length, and F is the force.

How do you calculate pressure?

Force / Area

What is the relationship defined by V=I*R in circuits?

Voltage (V) = current (I) * resistance (R)

How is power calculated in electrical circuits?

= volts * amperes.

What defines specific gravity?

density of object / density of liquid.