A roller 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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