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Which of these is an example of acceleration? a bicyclist turning around a corner
a car parked in a driveway
a bus traveling north at 25m/s
a helicopter waiting to take off
a bicyclist turning around a corner
Which refers to the rate of change in velocity? speed
acceleration
direction
magnitude
If the change in velocity increases, what happens to the acceleration during the same time period? Acceleration decreases.
Acceleration increases.
Acceleration becomes negative.
Acceleration becomes steady.
If velocity is positive, which would most likely yield a negative acceleration? A final velocity that is faster than an initial velocity.
A time that is less than a half hour.
An initial velocity that is faster than a final velocity.
A time that is greater than a half hour.
An initial velocity that is faster than a final velocity.
Which equation can be used to solve for acceleration? t = Δv/a
vf = at - vi
a = d/t
Δv = a/t
Which equation is most likely used to determine the acceleration from a velocity vs. time graph? a = t/Δv
m = v2 - v1/x2 - x1
a = Δv/m
m = x2 - x1/v2 - v1
A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. What is the acceleration? -13 m/s2
-6 m/s2
6 m/s2
13 m/s2
Ariana is accelerating her car at a rate of 4.6 m/s2 for 10 seconds. Her starting velocity was 0 m/s. What was her final velocity? 0 m/s
2.3 m/s
4.6 m/s
46 m/s
Micah knows that a car had a change in velocity of 15 m/s. What does Micah need to determine acceleration. distance
time
direction
speed
Isla's change in velocity is 30 m/s, and Hazel has the same change in velocity. Isla had negative acceleration, and Hazel had positive.
Which best explains why they would have different accelerations?
Isla had a different time than Hazel.
Isla had positive acceleration, and Hazel had negative.
Isla went a farther distance than Hazel.
Isla had a different time than Hazel.
Hunter's velocity was 4.5 m/s. At the end of his race, his velocity was the same. Which best describes his movement? His movement stopped.
His acceleration is zero.
His time was constant.
His acceleration was positive.
His acceleration is zero.
The chart shows the times and accelerations for three drivers. Which lists them from greatest to lowest change in velocity? Dustin → Diego → Kira
Dustin → Kira → Diego
Kira → Dustin → Diego
Kira → Diego → Dustin
The chart shows the time, initial velocity, and final velocity of three riders. Which best describes the riders? Gabriella is speeding up at the same rate that Kendall is slowing down, and Franklin is not accelerating.
Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating.
Gabriella and Franklin are both slowing down, and Kendall is accelerating.
Gabriella is slowing down, and Kendall and Franklin are accelerating.
Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating.
Beverly and Carl are in a race. Their graphs show the data. Which best describes the race? Even though for a majority of the race they accelerated at the same rate, Carl won because his initial acceleration was greater than Beverly's.
Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl's.
Beverly accelerated at a greater rate for the entire race.
Carl accelerated at a greater rate for the entire race.
Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl's.
Based on the graph of velocity over time, which could be the initial velocity and the final velocity for this graph? initial = 0 m/s; final = 2.5 m/s
initial = 2.5 m/s; final = 2.5 m/s
initial = 3.0 m/s; final = 6.0 m/s
initial = 6.0m/s; final = 3.0 m/s
initial = 2.5 m/s; final = 2.5 m/s