A boat of mass 450 kg drifts along a river at a speed of 10 m/s to the north.
What impulse is required to decrease the speed of the boat to 6 m/s to the
north?

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

where’s the list ? the question is incomplete

i'm on my way to history not a mistory.