Unit 3: Velocity, Acceleration

Question 1

what are three types of acceleration?

Answer 1

speeding up, slowing down, and changing direction

Question 2

S=

Answer 2

S= D
T

Question 3

a=

Answer 3

a= change in V
T

Question 4

what is the rate at which velocity changes?

Answer 4

acceleration

Question 5

if you drop a rock off a cliff, what will the ACCELERATION be 3.0 seconds later?

Answer 5

9.8m/s/s

Question 6

if you drop a rock off a xliff, what will the VELOCITY be 3.0 seconds later?

Answer 6

solve for change in V = a x t
3.0 seconds x 9.8m/s/s = 29m/s

Question 7

The slope of a position vs. time graph shows us an object’s ________

Answer 7

SPEED
change in position over time, (d/t)

Question 8

The slope of a speed vs. time graph shows us an object’s

Answer 8

ACCELERATION
change in speed over time

Question 9

On a position vs. time graph, a _______ line shows acceleration

Answer 9

A CURVED line
(straight shows not moving, and linear shows constant speed)

Question 10

On a speed vs. time graph, a _________ line shows acceleration

Answer 10

A CURVED or LINEAR line
(straight shows constant speed)