Physics overview

Question 1

What is a vector?

Accepted Answer

A line with both magnitude and direction.

Question 2

What is a force?

Accepted Answer

Newton's 2nd Law, F=ma, A vector quantity., A push or pull on an object.

Question 3

What is Normal force?

Accepted Answer

A perpendicular force to the surface

Question 4

What is a Scientific Law?

Accepted Answer

A bunch of observations to describe a pattern in nature., A rule of nature.

Question 5

What is Newton's 1st Law?

Accepted Answer

No change in movement unless acted on by an outside force., Law of Inertia

Question 6

What is a theory?

Accepted Answer

The same explanation for something.

Question 7

What is velocity?

Accepted Answer

speed, position over time, A vector, Δd-Δt

Question 8

What is a time interval?

Accepted Answer

Change in two time periods, Δt=tf-ti, Equal to the final time minus the initial time.

Question 9

Car @ rest accelerates @ 3.5-m/s^2. How far will it have gone when it is traveling at 25-m/s?

Accepted Answer

distance (final)= 89.3 m

Question 10

What is a scalar?

Accepted Answer

A line with magnitude (size)

Question 11

What is a model?

Accepted Answer

An idea for to explain a phenomenon., A grouping of equations to explain a phenomenon., A structure for a phenomenon.

Question 12

What is acceleration?

Accepted Answer

velocity over time, Increasing of motion, Δv-Δt

Question 13

What is displacement?

Accepted Answer

Δd=df-di, Distance, Equal to the final position minus the initial position., Space between to points

Question 14

What is a non-linear relationship?

Accepted Answer

not straight, Directly non-proportional

Question 15

What happens when you combine Mentos with Coca Cola?

Accepted Answer

A mess., Depends on the ratio, A fizzy explosion

Question 16

What is Newton's 3rd Law?

Accepted Answer

A baseball hitting a bat., Objects exert equal and opposite forces on each other.

Question 17

What is a linear relationship?

Accepted Answer

Directly proportional, a straight line

Questions 17