Aball is kicked from a location 7, 0, −8 (on the ground) with initial velocity −11, 19, −5 m/s. the ball's speed is low enough that air resistance is negligible. (a) what is the velocity of the ball 0.4 seconds after being kicked? (use the momentum principle! ) v = incorrect: your answer is incorrect. m/s

Explanation:

given,

location of the ball ⟨7,0,−8⟩

initial velocity of the ball ⟨-11,19,−5⟩

time = 0.4 s

speed of the ball = ?

using Momentum Principle

change in momentum = Force x time

Net force acting in this case will be equal to force due to gravity because air resistance is negligible.

F_net = F_g = ⟨0 ,-9.8 m , 0⟩

now,

hence, the velocity of the ball 0.4 s after being kicked is equal to

the answer is 3.1 his answer is wrong mines is right

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!