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- Homework Statement
- c) How can the fan on the airboat be used to change the direction the boat is travelling in?

How can it be used to increase or decrease the speed of the boat?

d) If the boat is going upstream against a current that has a force of 250 N against the

motion of the boat, find the acceleration of the boat if there is a forward force of 360 N from

the fan. (Remember that the mass of the boat is 220 kg.)

- Relevant Equations
- Fnet=F1+ F2

Fnet=ma

a=Fnet/m

for c) i need help

d)

Given: Let [forward] be positive.

F 1 = — 250 N

F 2 = 360 N

Unknown: a = ?

Equation: F net= F1+ F2

F net= m a

Solve: F net= (— 250 N) + 360 N = 110 N

F net= m a

a = F net/ m

= 110 N / 220 kg= 0.5 m/s [forward]

Statement: The acceleration of the boat is 0.5 m/s [forward].

d)

Given: Let [forward] be positive.

F 1 = — 250 N

F 2 = 360 N

Unknown: a = ?

Equation: F net= F1+ F2

F net= m a

Solve: F net= (— 250 N) + 360 N = 110 N

F net= m a

a = F net/ m

= 110 N / 220 kg= 0.5 m/s [forward]

Statement: The acceleration of the boat is 0.5 m/s [forward].

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