A soccer player kicks a ball with a mass of 0.42 kg. The ball travels at a velocity of 28 m/s for 1.6 s until the goalie stops it.

What was the average acceleration of the soccer ball?

A.
17.5 m/s

B.
0.06 m/s

C.

0.06 m/s²

D.

17.5 m/s²

Question

A soccer player kicks a ball with a mass of 0.42 kg. The ball travels at a velocity of 28 m/s for 1.6 s until the goalie stops it. 

 

What was the average acceleration of the soccer ball?
	
	
 
A.
	17.5 m/s
	
 
B.
	0.06 m/s
	
 
C.
	

0.06 m/s²
	
 
D.
	

17.5 m/s²

anonymous · Answer

Average acceleration is the change in velocity over an interval divided by the change in time. 
So initial velocity + final / 1.6 seconds   = (28 + 0)/1.6  = 17.5 m/s^2  make sure to indicate it is per seconds SQUARED, as we're talking about acceleration. so answer is D

anonymous · Answer

Thank you