Basic Mechanics Lecture 12

These flashcards cover key concepts in basic mechanics including Newton's laws of motion, uniform motion, and acceleration.

What does Newton's First Law of Motion state?

An object in motion will stay in motion unless acted upon by an outside force.

What is the formula for Newton's Second Law of Motion?

Force = mass x acceleration (F = ma).

What is the acceleration due to gravity on Earth?

Approximately 9.8 m/s².

Define uniform motion.

Motion where acceleration is zero and the direction does not change.

Which object(s) are in uniform motion according to the lecture?

A ball sitting motionless on the table, a ball swinging around at a constant speed, and a spaceship traveling in a straight line at a constant velocity.

What is the acceleration of a mouse that accelerates from rest to a velocity of 2 m/s in 5 seconds?

0.4 m/s².

What happens to objects that are not supported according to the lecture?

They will accelerate towards the ground at a rate of 9.8 m/s².

What is the significance of action and reaction forces?

They are equal in magnitude but opposite in direction, indicating a form of equilibrium.

What do you need to know besides mass to calculate force?

Acceleration.

What is inertia in the context of Newton's First Law?

It refers to the tendency of objects to resist changes in their state of motion.