According to the Guinness Book of World Records, the longest home run ever measu

Question

According to the Guinness Book of World Records, the longest home run ever measured was hit by Roy “Dizzy” Carlyle in a minor league game. The ball traveled 188 m (618 ft) before landing on the ground outside the ballpark. Assuming the ball's initial velocity was 47 above the horizontal and ignoring air resistance, what did the initial speed of the ball need to be to produce such a home run if the ball was hit at a point 0.9 m (3.0 ft) above ground level? Assume that the ground was perfectly flat. How far would the ball be above a fence 3.0 m (10 ft) high if the fence was 116 m (380 ft) from home plate?

Explanation / Answer

let initial velocity be V m/s

horizontal component=Vcos(47)

let the time taken be t sec

distance travelled=Vcos(47)*t=188

t=275.66/V sec

initial vertical velocity Vsin(47)

distance travelled=0.9m

by newton formula

S=ut+0.5at^2

0.9=sin(47)*275.66-0.5*9.8*(275.66/V)^2

V=43.07 m/s

(b) when horizontal distance=116 m

time=116/Vcos(47)=3.948 sec

vertical distance travelled in such time

S=Vsin(47)*3.948-0.5*9.8*3.948^2=48.01 m

high above fence=48.01-3=45.01 m

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

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