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AleksandrR [38]

3 years ago

15

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 accelerati

on?
-7.3 m/s2

7.3 m/s

-7.3 m/s

7.3 m/s 2

1 answer:

erica [24]3 years ago

8 0

Final velocity(v) = 32 m/s
Initial velocity(u) = 10 m/s

Using kinematic equation v = u + at,

32 = 10 + a(3)

32-10
--------- = a
3

a = 22
----
3

a = 7.3 m/s^2.

Hence acceleration of the roller coaster is 7.3 m/s^2.

Hope this helps!!

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