The phrase "light year" is a <u><em>distance</em></u> ... it's the distance that light travels through vacuum in one year.
When you look at an object located 1 light year away from you, you see it as it was 1 year ago.
If a star located 10 light years away from us suddenly brightens, or dims, or explodes, we see the event <em>10 years later.</em>
 
        
             
        
        
        
Heat equation, Q = m.c.Δt
Here, c represents " the specific heat of the substance "
Hope this helps!
        
                    
             
        
        
        
Answer:
is there supposed to be a pic and abcd options?
 
        
             
        
        
        
We can solve for the acceleration by using a kinematic equation. First we should identify what we know so we can choose the  correct equation.
We are given an original velocity of 24 m/s, a final velocity of 0 m/s, and a time  of 6 s. We and looking for acceleration (a) in m/s^2.
The following equation has everything we need:

So plug in the known values and solve for a:
0 = 24 + 6a
-24 = 6a
a = -4 m/s^2