What is a good rule-of-thumb for using color background in a worksheet?

The answer is given below

Explanation:

A good rule-of-thumb for using color background in a worksheet are:

• Avoid using more than four colors as ideally 2-3 colors should be used.

• Opt for tones, shades, and tints rather than being tempted to use many colors.

• Colors that are controversial should be avoided.

• Color should be added when it's required to pass across a message.

• A base color should first be selected, then complementary colors should be added to it.

given the lack of choices, i'm gonna wing it and say that pushing your car off a cliff might not be the best idea. your car might sustain damage from the fall and will probably result in the car being too damaged to jump start.

if that's not good enough, avoid filling the car with bees. bees might get agitated when trapped or during the moving process, and might result in death or painful stings that will make jump starting your car very difficult. but in the event that you do choose to fill your car with bees, remember to wear protective gear!

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.