You toss a ball straight up by giving it an initial upward velocity of 18 m/s. what is the velocity of the ball 0.50 s after you released it? define the positive y direction to be upward, the direction that you toss the ball.

We know the equation of motion v = u+ at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.

Acceleration = - 9.81 . Negative means acceleration is towards center of planet Earth.

Time taken = 0.50 seconds

Initial velocity = 18 m/s

v = u+at

v = 18-9.81*0.50

   = 13.095 m/s

So velocity after 0.50 seconds is 13.095 m/s

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.

there are no contact forces mentioned on the list of choices that you've provided.