A roller coaster is moving at 25 m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster?
Answers
Answered by
22
Answer:
2.5 m/s
Explanation:
initial velocity upon final velocity
Answered by
10
Given:
Initial speed = 25 m/s
Final speed = 10 m/s
Time taken = 3 seconds
To find:
Acceleration of the coaster.
Solution:
We know that one of the equations of motion is:
v = u + at
Where v is the final speed, u is the initial speed, t is the time taken and a is the acceleration.
On substituting the values in the formula, we get:
10 = 25 + 3a
On simplifying the equation, we get:
3a = 10 - 25
On further simplifying, we get:
3a = 15
Thus the value of acceleration will be:
a = -5 m/s²
Thus the acceleration of the coaster is -5 m/s².
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