2 years ago

Coffee shops sell paper coffee cups with cardboard sleeves for customer safety. Why?

Chemistry

1 answer:

11111nata11111 [884]2 years ago

4 0

The cardboard sleeves reduce the heatness from the coffee cup. So then the cosumer does not get a burn.

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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

erica [24]

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.

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