Question

PartA The ball is kicked from point A with the initial velocity UA 12 m/s . (Figure 1) Determine the range R when the ball strikes the ground. Express your answer to three significant figures and include the appropriate units. R12.7 m Correct Significant Figures Feedback: Your answer 12.67 m was either rounded differently or used a different number of significant figures than required for this part. Part B Determine the speed when the ball strikes the ground. Express your answer to three significant figures and include the appropriate units. Figure 1 of 1 24 You have already submitted this answer. Enter a new answer 30° No credit lost. Try again. Submit Previous Answers Request Answer

I need part B to be answered.

Answer 1

$R=\frac {v^2\sin 2\theta}{g}$

$12.7=\frac {v^2\sin 2\cdot 30^{\degree}}{9.8}$

$v\approx 12\: m/s$ (As expected according to the conservation of energy)