Answer:
13 inches.
Step-by-step explanation:
Square root 169 and you will get the answer 13. Hope this helped.
 
        
             
        
        
        
Answer:
The velocity of the car after the collision is -5.36 m/s
Step-by-step explanation:
An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.
let the following:
m₁ = mass of the car = 1400 kg
m₂ = mass of the truck = 3200 kg
u₁ = velocity of the car before collision = 13.7 m/s
u₂ = velocity of the truck before collision = 0 m/s
v₁ = velocity of the car after collision
v₂ = velocity of the truck after collision
v₁ = [ u₁ * (m₁ - m₂) + u₂ * 2m₂ ]/ (m₁ + m₂) 
    =  [ 13.7 * (1400 - 3200) + 0 * 2 * 3200 ]/ (1400 + 3200) 
    = - 5.36 m/s
So, <u>the velocity of the car after the collision is -5.36 m/s</u>
 
        
             
        
        
        
Answer: A = X + Y
B = X or Y. A = 12, B = 8, X = 2, Y = 10, A = 12, B = 9.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
total 20 squares in matrix of size 4×3
Step-by-step explanation:
in square of size 1×1
six squares of size 2×2
2 squares of size 3×3