I wish to double check this answer!
A motor boat travels in a straight path on a calm lake with a speed of 7.4 m/s. suddenly the motor stops and the boat starts to slow at a rate of .9 m/s^2. Determine the distance it takes for the boat to come to a stop.

Question

I wish to double check this answer! 
A motor boat travels in a straight path on a calm lake with a speed of 7.4 m/s. suddenly the motor stops and the boat starts to slow at a rate of .9 m/s^2. Determine the distance it takes for the boat to come to a stop.

anonymous · Answer

I went with 0=.9(t) + 7.4 to solve for time = 8.2
then stuck it in
x=1/2(.9)(8.2)^2 + 7.4(8.2) + 0 (?) = 96.94m
does anyone know if this looks right?

abmon98 · Answer

so u=7.4 v=0 a=.9 so apply the equation that says= v^2-u^2/2a

abmon98 · Answer

-(7.4)^2/2(.9) will give you the distance

anonymous · Answer

ah thanks! I just made .9 negative because it was slowing

abmon98 · Answer

your most welcome :)