P4.C Progress Check 2

Quiz by ALEJANDRO URBY

High School

Physics (2017)

Texas Essential Knowledge and Skills (TEKS)

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### Measures 1 skill fromHigh SchoolPhysics (2017)Texas Essential Knowledge and Skills (TEKS)

Measures 1 skill from

High School

Physics (2017)

Texas Essential Knowledge and Skills (TEKS)

112.39.c.4.c

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5 questions

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- Q1What variables are given and implied in the above situation?v(ix)=14m/s, t=2s, v(iy)=0m/s, a(x)=0m/s^2, a(y)=-9.8m/s^2Pick the other choice. We are given the initial horizontal velocity and the time. The variables that are implied are the initial vertical velocity (0m/s because it was launched horizontally, not verticaly), the horizontal acceleration (0m/s^2 because there is no horizontal force after it is in the air), the vertical acceleration (-9.8m/s^2 because of gravity).120s112.39.c.4.c
- Q2What equation is necessary to solve for the horizontal displacement of the baseball as it lands if we know what v(ix), a(x), and t is?a=(vf-vi)/td=v(ix)*t+(1/2)a(x)*t^2a=(vf^2-vi^2)/2dv=d/t120s112.39.c.4.c
- Q3Which of the following quantities was constant while the baseball was in the air?AccelerationVelocityPositionDisplacement120s112.39.c.4.c
- Q4Calculate the displacement of the ball after it lands.20m24m9.8m28m120s112.39.c.4.c
- Q5What would a graph of acceleration vs. time for the horizontal component of the ball’s motion look like?Flat line on 0m/s^2Straight line with a positive slopeStraight line with a negative slopeFlat line on -9.8m/s^2120s112.39.c.4.c