Physics

Kinematics Solutions

For problems, 6-9, consider the following information. Trinity throws a ball at 25.0 m/s at an angle of 30.0
from ground level. Neglect air resistance.
6. What is the ball's initial velocity, in component form?
a. [12.5 m/s, 21.7 m/s)
b. [12.5 m/s, 12.5 m/s]
c. [0 m/s, 25.0 m/s)
d. (21.7 m/s, 12.5 m/s)
7. What is the ball's velocity at the highest point in its trajectory?
a. [0 m/s, 21.7 m/s]
b. [25 m/s, 0 m/s)
c. [0 m/s, 25 m/s]
d. (21.7 m/s, 0 m/s)
8. Which of the following expressions tells you how far the ball travels horizontally over time, d? Let v, be
the x-component of the ball's velocity and v, be the y-component of the ball's velocity.
b. d=vt
c. d=v.V,1
d. None of the above
9. What is the final range of Trinity's ball?
a. 55 m
b. 32 m
c. 22 m
d. 1.28 m