How Well Can You Explain Newton's Laws Of Motion Flashcards

An object will remain at a constant velocity unless acted upon by an external force. a = 0 *the object can either be a rest, or maintaining a constant velocity.

F = ma

For every action, there is an equal reaction in the opposite direction.

A measure of magnitude

A measure of magnitude and direction

Weight (F_w) Tension (F_T or T) Friction (F_f) Normal (F_N or N)

F_B upward force experienced by floating objects. The magnitude is calculated by considering the volume of the object submerged in the fluid. The object displaces a volume of liquid equal to its own volume, and the liquid pushes back by an amount that is exactly equal to the weight of the liquid that would exist in that volume.

F_A Any force applied to an object by another object.

The gravitational force felt by an object on the earth's surface. The acceleration due to gravity on Earth is 9.8 m/s² and always points toward the center of the earth. W = mg

The force applied by a rope or chain as it pulls an object.

Force that opposes motion and describes the resistance of two surfaces in contact as they move across each other. Two Types:Static: Applies to an object that is not moving and is always equal to the force applied , aka the amount of force that needs to be overcome for an object to move. Kinetic: experienced once static friction is overcome and an object is moving. The size of the friction force is proportional to an object's weight.

Changes the magnitude and direction of an applied force, with the result leading to a mechanical advantage for the user.

The ratio of force output from from a simple machine relative to the force input. MA = F_output / F_input

Fulcrum lies between the input and output forces, and the input is in the opposite direction of the output. EX: seesaw

Input and output forces are on a common side of the fulcrum, and both are in the same direction. EX: wheelbarrow