Question

please see attachment

Answer 1

\[\large{a = \frac{18 kmh^{-1}}{t}}\]
\[\large{p = Ft }\]
\[\large{p = 3000 kg \times a \times \frac{5}{a}}\]
\[\large{p = 15000 kg ms^{-1}}\]

Answer 2

or we can say : 15000 Ns ..

wooh I answered the question myself...

well I think I didn't convert 18 kmph to m/s

that is the fault

sorry for disturbing and thanks for helping :P

Answer 3

Impulse is just m(v-u).

Answer 4

& yes u answered it urself haha.

Answer 5

yes because :
\[\large{I = Ft}\]
\[\large{I = ma \times t}\]
\[\large{I = \frac{m(v-u)}{t}\times t = m(v-u)}\]

Answer 6

hence I = m (v-u)

Answer 7

right?

Answer 8

Yes it is. You just did a conversion error :)