Question

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Answer 1

here mass is 5kg,

initial velocity is 3m/s,

final velocity is 7m/s

time is 2 sec

➡️for first part of motion

v=u+at

7=3+a2

7-3=2a

2a=4

a=2m/s²

then force acting on object

F=Ma

F=5*2

F=10N

➡for second part of motion

v=u+at (here time is 5sec)

v=3+2*5

v=4+10

v=14m/s

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Answer 2

Here is your answer.

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