Aroller coaster starts down a hill at 10 m/s. three seconds later, its speed is 32 m/s. what is the roller coaster’s acceleration?

question 1 options:

-7.3 m/s

-7.3 m/s2

3 m/s

3 m/s 2
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question 2 (2 points) question 2 unsaved
natalie accelerates her skateboard along a straight path from 4 m/s to 0 m/s in 25.0 s. find the acceleration.

question 2 options:

-6.25 m/s2

0.16 m/s2

-0.16 m/s2

6.25 m/s2

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question 3 (2 points) question 3 unsaved

find the average acceleration of a northbound subway train that slows from 12 m/s to 9.6 m/s in 0.9 s

question 3 options:

-2.7 m/s2

2.7 m/s2

-2.7 m/s

2.7 m/s

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question 4 (2 points) question 4 unsaved
what is a chicken’s rate of acceleration that speeds up from 4 mph (mi/h) to a top speed of 9 mi/h in 0.5 hr?

question 4 options:

2.5 mi/h/s

-2.5 mi/h/s

2.5 mi/h2

10 mi/h2

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question 5 (2 points) question 5 unsaved
which units would be appropriate to measure acceleration?

question 5 options:

m/s with direction

m/s2

kg (m/s)

m/s

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