## anonymous one year ago A rowboat passenger uses an oar to push the boat off the dock by exerting a force of 30.0 N for 4.0 s. What impulse acts on the boat? A. 7.5 kg * m/s B. 480 kg * m/s C. 0.13 g kg * m/s D. 120 kg * m/s ** :/

1. Michele_Laino

it is simple, we have to apply this formula: $\Large I = F\Delta t$

2. Michele_Laino

so we can write: $\Large I = F\Delta t = 30 \times 4 = ...$

3. anonymous

120? so choice D is our solution?

4. Michele_Laino

yes! That's right!

5. anonymous

yay!! thank you!