Question

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Answer 1

Answer:

i. ) 4N

ii. ) 0N

iii. ) 20N

iv. ) 0N

Explanation:

i. ) velocity = displacement / time

velocity = 10 / 5

velocity = 2 m/s

acceleration = velocity / time

acceleration = velocity / time

acceleration = 2 / 5

acceleration = 0.4 m/s^2

F = ma

  = 10 (0.4 )

  = 4 N

ii.) velocity = 0

acceleration = velocity / time

acceleration = 0/5

acceleration = 0

F = ma

F = 10 ( 0)

F =  0 N

iii.) acceleration = velocity / time

accleration = 10/ 5

                   2 m/s^2

F= ma

F= 10 ( 20

F = 20 N

iv.) the velocity is constant.

* Constant velocity = zero acceleration

F = ma

F = 10 ( 0 )

F = 0 N