An object, when a force of 20N is applied, accelerates at 5 metres per second squared. what is the mass of the object in kilograms

Now, i addition to the 20N force from question 1, the object is acted on by a force of 8N in the opposite direction. What is the resultant force in Newtons

now what is the acceleration of the object (in metres per second squared)

if the object starts from rest and travels for 10 seconds under the forces in question 2, what is its final velocity (in metres per second)

and how far has it traveled (in metres)

what is the final momentum of the object (in kilogram metres per second)

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