7. Your friend\'s Frisbee has become stuck in a tree 12 m above your throwing ar

Question

7. Your friend's Frisbee has become stuck in a tree 12 m above your throwing arm. You want to s to dislodge it. What speed do you have to throw the rock to bring it down? Ans: 16.13 m/s 8. A ball (.14 kg) is pitched at 90 mph. a) How much is this in m/s? b) If the bat connects with the ball and sends it into center field at 110 mph (change this to m/s how much energy (in joules) did the bat give the ball? c) How many calories (kCals) did the batter have to eat to impart that energy? (Conversion problem) d) A fan in the stands catches it at 3 meters high from the tip of the bat. Neglecting air resistance, how fast should it be traveling?

Explanation / Answer

Q1.

Vi² - V2² = 2*g*h

=> Vi = [2gh + V2²]

= [2*9.8*(12) + 5²]

= 16.13 m/s

Pls post other questions separately

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.