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AS maths help

I really don't understand these questions:

1. An object of mass 2kg is acted on by two forces, (1/5) and (5/3)

What is it's acceleration, in vector form, and its magnitude

(1/5) and (5/3) are not fractions they are vectors!

Thank you!
Original post by Middlechild123
I really don't understand these questions:

1. An object of mass 2kg is acted on by two forces, (1/5) and (5/3)

What is it's acceleration, in vector form, and its magnitude

(1/5) and (5/3) are not fractions they are vectors!

Thank you!


Determine the resultant force.

Use F=ma
Reply 2
As RDK said, use F=ma F=ma
Original post by Middlechild123
I really don't understand these questions:

1. An object of mass 2kg is acted on by two forces, (1/5) and (5/3)

What is it's acceleration, in vector form, and its magnitude

(1/5) and (5/3) are not fractions they are vectors!

Thank you!


Are the forces i + 5j and 5i + 3j? If so, what is the total force acting on the object?
Original post by RDKGames
Determine the resultant force.

Use F=ma


But the answer said to add the forces to get (3/4) and then square root 3^2 add 4^2 to give 5?
Reply 5
Original post by Middlechild123
But the answer said to add the forces to get (3/4) and then square root 3^2 add 4^2 to give 5?

No if you add the forces you get (6/8). But the question is not asking for the force, it's asking for the acceleration.

So you have to use F = ma and this is where (3/4) comes from.

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