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.
40 m/s²

B.
40 m/s

C.
10 m/s

D.
10 m/s²

Question

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.
40 m/s²
 
 B.
40 m/s
 
 C.
10 m/s
 
 D.
10 m/s²

ipwnbunnies · Answer

$$avg. acceleration = \frac{v_f - v_i}{\Delta t}$$
This means the final velocity minus the initial velocity. Divided by the time interval.

anonymous · Answer

can you please show me what the equation looks like with the numbers in I can solve it after that

anonymous · Answer

I wanna make sure I don't put the numbers in the wrong spot

ipwnbunnies · Answer

Well, what's the final velocity? The initial velocity? The time interval?

anonymous · Answer

final velocity I think is the 20

ipwnbunnies · Answer

Yep. And the cheetah started from rest. So, what's its initial velocity?

anonymous · Answer

attachment

ipwnbunnies · Answer

Yep. And the time is given as 2 seconds. You can easily plug the number in now.

anonymous · Answer

If I do it in my head right its D

ipwnbunnies · Answer

Yes.