Please tell me how to set this up...

The force acting on an object varies directly with its acceleration. A force of 25 newtons accelerates an object at 1.25 m/s. What is the acceleration of a 35 newton force?

1 answer

force=k*acceleration.
25=k*1.25m/s^2

k=25/1.25=20

35=20*a
a=1.75m/s^2