A toy car with a mass of 2.5 kg travels at a velocity of 37 m/s for 2.5 s until it is stopped by a wall.

What was the average acceleration of the toy car?

Question

A toy car with a mass of 2.5 kg travels at a velocity of 37 m/s for 2.5 s until it is stopped by a wall.

 

What was the average acceleration of the toy car?

anonymous · Answer

@douglaswinslowcooper

anonymous · Answer

A.
	

14.8 m/s²
	
 
B.
	

0.07 m/s²
	
 
C.
	14.8 m/s
	
 
D.
	0.07 m/s

anonymous · Answer

Units for acceleration are?

anonymous · Answer

Units?

anonymous · Answer

Acceleration = change in velocity / time = 37/2.5

anonymous · Answer

"units" means "dimensions" like kg, m, s etc.

anonymous · Answer

So 14.8?

anonymous · Answer

Yes, but I want you to now the units for acceleration

velocity is length/time = m/s
acceleration is velocity/time = (m/s)/s
acceleration = ?

anonymous · Answer

So its C

anonymous · Answer

acceleration is m/s^2

hartnn · Answer

the formula is 
v = u+at
u = initial vel = 37
v = final vel = 0 
t = time = 2.5
a = acceleration

anonymous · Answer

Oh :( its A than

anonymous · Answer

Just so. Are we done? Have a good rest.

anonymous · Answer

I suck so much at these things :(

anonymous · Answer

Yes! Thanks @douglaswinslowcooper 
You helped a lot