a motorcylce starts rest and accelerates at 7 m/s2 for 2 seconds. after 2 seconds, what is the motorcylces velocity in meters per second​

14

Step-by-step explanation:

As we know motorcycle started from rest so it was initially at rest than vi=0 and vf=?

From 1st equation of motion vf=vi+at

Putting values

vf=0+(7)*(2)

vf=0+14

vf= 14m/s

Remember m/s is the unit of velocity so it is included with velocity

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15