A cheetah can go from a state of resting to running at 20 m/s in just 2 seconds. What is the cheetah’s average acceleration?
A.
0.1 m/s2
B.
10 m/s2
C.
0.1 m/s
D.
10 m/s
I had the same question. The answer is: D)10 m/s you just divide 20m/s by 2 and you get 10 m/s
Please Please!!!!! Help
Try dividing the speed change by the time interval. That is the definition of acceleration, after all.
To find the cheetah's average acceleration, we can use the formula:
acceleration = (final velocity - initial velocity) / time
In this case, the final velocity is 20 m/s, the initial velocity is 0 m/s (since the cheetah is at rest initially), and the time is 2 seconds. Plugging these values into the formula, we have:
acceleration = (20 m/s - 0 m/s) / 2 seconds
Simplifying this equation gives us:
acceleration = 20 m/s / 2 seconds
acceleration = 10 m/s²
So, the cheetah's average acceleration is 10 m/s².
Therefore, the correct answer is option B. 10 m/s².