Person throws a piece of popcorn straight up into the air planning to catch it o

Question

Person throws a piece of popcorn straight up into the air planning to catch it on the way down in her mouth without moving. She releases the popcorn 0.2m above her mouth.

What vertical velocity should she release it if she wants it to achieve a maximum height 1m above her mouth?

If a bird wants to swoop down and snatch the popcorn when it is at its maximum heigh, what time should the bird be at 1m above her mouth to grab the popcorn?

3. Ellawyn throws a piece of popcorn straight up into the air planning to catch it on the way down in her mouth without moving. She releases the popcorn 0.2m above her mouth. a) What vertical velocity should she release it with if she wants it to achieve a maximum height of 1m above her mouth? b) If a bird wants to swoop down and snatch the popcorn when it is at its maximum height, what time should the bird be at 1m above her mouth to grab the popcorn?

Explanation / Answer

3(a) at maximum height v = 0

applying vf^2 - vi^2 = 2 a d

0^2 - v0^2 = 2(-g)(h)

v0 = sqrt(2 x 9.8 x 1) = 4.43 m/s

(B) vf = v0 + a t

0 = 4.43 - 9.8 t

t = 0.45 sec

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

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