A baseball is thrown at an angle of 24◦ relative to the ground at a speed of 25.1 m/s. The ballis caught 47.7257 m from the thrower.How high is the tallest spot in the ball’s path?Answer in...

A baseball is thrown at an angle of 24◦ relative to the ground at a speed of 25.1 m/s. The ball
is caught 47.7257 m from the thrower.

How high is the tallest spot in the ball’s path?
Answer in units of m.

Asked on by banjoplay

2 Answers | Add Yours

hala718's profile pic

hala718 | High School Teacher | (Level 1) Educator Emeritus

Posted on

Firste we need to determine the distance that the ball traveled before it was caught.

The ball path withh form the hypotenuse in a right angle triangle.

Then, let the distance traveled be (h)

We have the speed :

s = 25.1 m/s

Also we have the angle:

a= 24 degrees.

Also, given the distance from the througher to the catcher

d= 47.7257

But we know that:

cosa = adjacent/ hypotenuse

==> cos 24 = 47.7257 / h

==> h= 47.7257 / cos 24

            = 47.7257 / 0.9135

==> h= 52.24  m  ( approx.)

Then the ball travelled 52.24 m .

neela's profile pic

neela | High School Teacher | (Level 3) Valedictorian

Posted on

The speed of the ball which is thrown with an angle 24 degree  to the horizontal is 25.1 m/s.So the ball has the  initial vertical component of velocity 25.1sin24 m/s.

The ball goes on loosing its vertical component of velocity on account of acceleration due to gravity.At the highest point in its path , the ball has the vertical component of velocity 0.

Therefore, we apply the equation of motion v^2 - u^2= 2gh , where v is the final vertical component at the highest point which is zero,  u is the initial vertical component of velocity which is 25.1 sin24,  g (= 9.81m/s^2)  is the acceleration due due to gravity, and h is highest height the ball reaches in its path.

 Substituting the values v = 0, u = 25.1sin24 , g = -9.82m/s^2, we determine h.

0^2 - (25.1sin24)^2 = 2*(-9.81)h.

h = (25.1sin24)^2/ (2*9.981) .

h =  5.3122 meter.

Therefore the ball reaches the highest point of 5.3122m in its path.

 

 

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