A ball is kicked from a location (on the ground) with initial velocity m/s. The

Question

A ball is kicked from a location (on the ground) with initial velocity m/s. The ball's speed is low enough that air resistance is negligible. What is the velocity of the ball 0.2 seconds after being kicked? (Use the Momentum Principle!) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.2seconds after it is kicked? What is the average velocity of the ball over this time interval? Use the average velocity to find the location of the ball 0.2 seconds after being kicked:

Explanation / Answer

velocity = <-8 12 -4>

Y direction velocity

avg velocity = <-8 13 -4>

r = r0 + vavg*time = < 6, 0, -7 >+<-8 13 -4>*0.2=<4.4 2.6 -7.8>

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