Physics Test

Question 0

What is slope and how do you calculate it?

Answer 0

Slope is the steepness of a line on a graph. You calculate it by rise\sum

Question 1

How do you know an object is in motion?

Answer 1

An object is in motion if it’s distance from another object is changing

Question 2

What is acceleration and what are three ways an object can accelerate?

Answer 2

Acceleration is the rate at which velocity changes. Accelerate by increasing speed, decreasing speed, or changing direction

Question 3

What is the difference between speed and velocity?

Answer 3

Speed is the distance an object travels in a given amount of time. Velocity is speed in a given direction

Question 4

Speed formula and unit

Answer 4

Distance/time

M/s, km/hr, cm/s

Question 5

Average speed formula and unit

Answer 5

Total distance/total time

M/s, km/hr, cm/s

Question 6

Acceleration formula and unit

Answer 6

               Time (s) M/s2

Question 7

Force formula and unit

Answer 7

Mass x acceleration

Kg• m/s2

Question 8

Momentum formula

Answer 8

Mass x velocity

Kg•m/s

Question 9

Speed triangle

Answer 9

D
_____
S • T

Question 10

Balanced force

Answer 10

5N. 5N
——> <——

0N

Question 11

Unbalanced force

Answer 11

2N. 20N

—–> <——-

Question 12

Gravity

Answer 12

Gravity is a force that PULLS objects together

Question 13

Factors that affect gravity and how

Answer 13

Mass and distance
More mass=more gravity
More distance= less gravity

Question 14

Difference between mass and weight

Answer 14

Mass does not take gravity into consideration while weight does. Weight adds gravity as a factor into weighing

Question 15

Four types of friction with example

Answer 15

Static: no objects moving
Slide: two solid objects slide over each other
Rolling: object rolls across a surface
Fluid: solid object goes through fluid

Question 16

Newton’s first law

Answer 16

An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an outside force

Question 17

Newton’s second law

Answer 17

Acceleration depends in the mass of an object and the amount of net force acting on it

Question 18

Newton’s third law

Answer 18

For every action there is an equal but opposite reaction

Question 19

Inertia

Answer 19

The resistance to change in motion

Question 20

Air resistance

Answer 20

A force acting against gravity

Question 21

Net force of a 1,000 kg object accelerating 3 m/s2

Answer 21

3,000 N

Question 22

What are two ways to increase acceleration of an object

Answer 22

Increase force

Decrease mass

Question 23

Terminal velocity

Answer 23

Maximum velocity an object can reach

Lighter= faster to reach terminal velocity