Answer:
5 N
Explanation:
The work done by a force on an object is (assuming that the direction of the force is parallel to the displacement of the object):

where
F is the magnitude of the force
d is the displacement of the object
In this problem, we know that:
W = 35 J is the work done
d = 7 m is the displacement of the object
Therefore, we can re-arrange the equation to calculate the force applied:

You're in luck ! This is gonna be easy. Listen to this:
On the exam, they're gonna put questions about all that same stuff
that they talked about IN the class all those times ! The exact same
material. And if they didn't talk about it in class, then it won't be on
the exam ! How cool is that ? !
All that stuff you copied from the board, all those notes you wrote in
your notebook so you'd remember it, all those handouts they gave out
in class, all that homework you did ... THAT's what they'll put on the exam !
It's gonna be all stuff that you seen and heard and studied before.
No surprises. It'll be a breeze, and you're totally gonna do fine.
Answer:
e. the number of active motor units increases.
Explanation:
There is a direct relationship between the number of active motor units and the grip strength in a given scenario. <em>For example, increase in the grip strength leads to increase in the number of active motor units. In the other-hand, the decrease in grip strength leads to the decrease in the number of active motor units.</em>