Answer: A. Usability testing
Explanation:
Usability testing would be the correct answer because if the user interface isn't "frendly" then people won't be able to use it properly. Or if you are refering to the word friendly as looking safe, then even more so would be usability testing. Because if people don't like the fonts and styles of the user interface, they might not use it at all.
This is helpful in order to have a larger space to work in.
Being able to collapse the ribbon gives the user a larger document to work with instead of focusing on what they’re typing as well as extra effects.
Hope this helps!
Answer:
A) Vector is an upward, downwards, left, and right directions for Emily vector is in the upward, downwards, and right directions for Fran.
B) The force of weight and gravity in the downward direction, the normal force in the upward direction, acceleration force in the right direction and the frictional force in the left direction. Fran doesn't have a frictional force.
C) Emily's velocity will slow down since the ground is being countering her velocity and slowing her down in the opposite direction until she stops. Fran's speed will be constant since there is no friction to slow her down so she will continue to move unless she hits a wall.
Explanation: