When the acceleration of a mass on a spring is zero, the velocity is at a (blank).

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.