Question

Please answer the question in the picture.

Answer 1

Heya,

Given,

Mass of the object = 5kg

Initial velocity = 10 m/s

Time taken = 20 s

Final velocity = 25 m/s 

acceleration = 25-10/20

= 0.75 m/s²


Force applied = mass × acceleration 

= 5 × 0.75

= 3.75 N

Hope it helps u.........

Answer 2

Hello There !
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It is Given That 

the Mass (m) of object     = 5 kg 

and the initial velocity (u) = 10 m/s 

time (t)                              = 20 seconds 

final velocity                      = 25 m/s 
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As We know ,Force = dp/dt 

                               = p(f) - p(I)/t

                               = (mv - mu)/t

                               = ( 5 x 25 - 5 x 10) /20 

                               = 5(25-10) / 20 

                               = (5 x 15) / 20 

                               = 75/20

                               = 3.75N
                               
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