course Phys 201
021. `query 21
Question: **** `q Explain how to obtain the final speed and direction of motion of a projectile which starts with known velocity in the horizontal direction and falls a known vertical distance, using the analysis of vertical and horizontal motion and vectors.
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Your solution:
horizontal y= Vo in the horizontal direction
Vf in the vert.= Vf= Vo^2+2*a*ds
v0=0m/s
a=9.8m/s
ds=known
a^2+b^2=c^2 = speed
tan^-1=(vy/vx) = direction
Self-critique Rating:
Question: **** `qGive at least three examples of vector quantities for which we might wish to find the components from magnitude and direction. Explain the meaning of the magnitude and the direction of each, and explain the meaning of the vector components.
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Your solution:
A ball falling to the ground with a certain velocity and angle.
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