Acceleration And Velocity Quiz Flashcards Preview

Physics > Acceleration And Velocity Quiz > Flashcards

Flashcards in Acceleration And Velocity Quiz Deck (15)
Loading flashcards...
1

Scalar Quantity

-Distance and Speed
-A quantity with only magnitude or size
-Does not tell you direction of movement (5m, 75km)

2

Speed SI Unit

m/s

3

Displacement SI Unit

Meters (m)

4

Velocity

-Displacement over a given time interval
-Meters/seconds (m/s)
-Graph: distance (X)/time

5

Acceleration

-Change of velocity over a period of time
-Meters/ seconds^2
-(m/s^2)
-Graph: change Velocity/ change time

6

Average Speed Equation

Average speed= distance/ change in time

7

Vector Quantities

-Acceleration, displacement, velocity
-Has both magnitude and direction

8

When is average speed = average velocity

-When there is only one direction of travel

9

Acceleration graph

-Velocity/t
-Speeding up or slowing down

10

Velocity Graph

X/t (displacement over time)
-Changing direction (forward or backward)

11

What does the area under a velocity vs. time graph represent?

-displacement
-Triangle: 1/2 v*t

12

Free fall

-The motion of a body when only the force due to gravity is acting on the body

13

Weight Equation

W=m*g
M=mass
G= gravity

14

Gravity

-9.8 m/s^2 (type of acceleration)
-Approximated because gravity is different depending on the objects elevation (closer to earth's center= higher force of gravity, further away= lower force of gravity)

15

Objects thrown upward

1)If an object returns to its start elevation
t0=t
2)At maximum height
V=0 m/s (ball has to stop to change direction)
Acceleration= gravity= 9.8 m/s^s
3)Object returns to its starting point w/
V0=v, but end velocity is negative (opposite direction) & magnitude is equal