hysics $2$A Exam #$2$

Version A

$10.$ Consider the diagram below where Block $1$ and Block $2$ slide together on a horizontal frictionless surface $($note they are always in contact throughout the entire motion of this problem$).$ Block $1$ has a mass of $4\mathrm{.}0$ kg and Block $2$ has a mass of $20$ kg $.$ Block $1$ is being pushed horizontally by a hand that provides a constant force of $36$ N $.$ What is the magnitude of the force of Block $2$ on Block $1?$

a$.1\mathrm{.}5$ N $.$ box$1=$

$($b$.)30$ N $.$

c$.18$ N

d$.6\mathrm{.}0$ N $.$

$F=ma$

$($e$.)36$ N $.$