Question

Please someone help me

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Answer 1

Answer:

Check attached image

Explanation:

use orthogonal ( rectangular ) component to find the change in velocity using vector

then find F acting on the system

Answer 2

Answer:

Force= mass(m) × acceleration (a)

Acc= v-u/∆t

since, u=0

acc= v/∆t

Force exerted=m×a

=m×v/t

=mv/∆t

option C as far as I could think at my lvl