The force (y) applied on a body of constant mass id directly proportional to the acceleration (x) done by the body, express this in the form of equation is two variables. Find the expression and the value of force (y), when acceleration (x) is 2 units.

From F = ma:

F = y,
a = x

New equation: y = mx
Since acceleration (x) = 2,
Force (y) = 2m

recall that F = ma

using your variables, y = mx

To express the relationship between force (y) and acceleration (x) in the form of an equation, we can write:

y = kx

where y represents the force, x represents the acceleration, and k is the constant of proportionality.

To find the expression and value of force (y) when acceleration (x) is 2 units, we need to know the value of k. However, the information provided does not specify the value of k. Without the value of k, we cannot determine the exact expression or value of force (y).

If the value of k is given, we can substitute it into the equation to find the expression and calculate the force (y) when acceleration (x) is 2 units.