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Dominic Roth is in a roller coaster car, which rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, his speed
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Dominic Roth is in a roller coaster car, which rapidly picks up speed as it rolls down a slope.

As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the
slope, his speed is 22 m/s. What is its average acceleration?​

User Bediver
by
4.9k points

1 Answer

2 votes

Answer: 6m/s²

Step-by-step explanation:

Acceleration = change in velocity / time

Initial velocity = 4m/s

Final velocity = 22m/s

Time = 3s

Acceleration = (22 - 4) / 3

a = 18 / 3 = 6m/s²

User Harleen Kaur Arora
by
4.5k points
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