Question

A golfer tees off from the top of a rise, giving the golf ball an initial...

A golfer tees off from the top of a rise, giving the golf ball an initial velocity of 42.5 m/s at an angle of 30° above the horizontal.The ball strikes the fairway a horizontal distance of 185 m from the tee. Assume the fairway is level.

(a) How high is the rise above the fairway?
m

(b) What is the speed of the ball as it strikes the fairway?
m/s

Homework Answers

Answer #1

Solution:

Initial velocity of the golf ball = v = 42.5 m/s

Angle of projection = 30 degrees.

Horizontal range = X = 185 m

Horizontal component of velocity = vx = 42.5 cos 30 = 36.8 m/s

Horizontal range = ( Horizontal component of velocity) (Total time ) = ( 36.8)(T) = 185

=> T = 185 / 36.8 = 5.026 s

Initial velocity along the vertical direction = vyi = 42.5 sin30 = 21.25 m/s

FInal velocity in the vertical direction = vyf =vyi -gt

= 21.25 -(9.8)(5.026)

= -28 m/s

The vertical height required is calculated using vf^2 = vi^2 +2ah

=> h = (vfy ^2 - viy^2 ) / 2g = [ (-28)^2 - (21.25)^2 ] /2*(9.8)

= 17 m

b) Speed as it strikes the fairway =  vx^2 +vy^2 = ( 36.8)^2 +(-28)^2 = 46.2 m/s

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Tiger woods tees off fro a hill hitting a golf ball 58.4 m/s at an angle...
Tiger woods tees off fro a hill hitting a golf ball 58.4 m/s at an angle of 20.5 degrees above the horizontal. The ball lands 10.5 m below. How long is the ball airborne? What distance did the ball travel
A golfer hits a 45 gram golf ball and it lands a distance away from the...
A golfer hits a 45 gram golf ball and it lands a distance away from the tee. The ball had an initial driving velocity of 45 m/s at 45 degrees. The ball lands 10 m on the ground up a slope from the hole. It has to roll down an in a) Draw a picture of the problem labeling ALL the known variables. b) What horizontal distance has the ball traveled from the golf tee when it hits the ground...
A golf ball rolls off a horizontal cliff with an initial speed of 11.0 m/s. The...
A golf ball rolls off a horizontal cliff with an initial speed of 11.0 m/s. The ball falls a vertical distance of 13.0 m into a lake below. (a) How much time does the ball spend in the air? s (b) What is the speed v of the ball just before it strikes the water? m/s
A golf ball rolls off a horizontal cliff with an initial speed of 12.7 m/s. The...
A golf ball rolls off a horizontal cliff with an initial speed of 12.7 m/s. The ball falls a vertical distance of 16.0 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the water?
After a golf ball is hit it takes off with an initial speed of 28.3 m/s...
After a golf ball is hit it takes off with an initial speed of 28.3 m/s and at an angle of 37.5° with respect to the horizontal. The golf field is flat and horizontal. Neglecting air resistance how far will the golf ball fly? Incorrect. Tries 1/12 Previous Tries How high will the golf ball rise? Tries 0/12 How much time will the ball spend in the air? Tries 0/12 How far would the ball fly if the initial speed...
Suppose a golf ball is hit off the tee with an initial velocity of 30.0 m/s...
Suppose a golf ball is hit off the tee with an initial velocity of 30.0 m/s at an angle of 35 degree to the horizontal a) What is the displacement on horizontal X axis? b) What is the displacement on vertical Y axis? c) What is the flight time? d) List all the vector quantities in the question. e) List all the scalar quantities in the question.
A golfer gives a ball a maximum initial speed of 51.4 m/s. What is the longest...
A golfer gives a ball a maximum initial speed of 51.4 m/s. What is the longest possible hole-in-one for this golfer? Neglect any distance the ball might roll on the green and assume that the tee and the green are at the same level. What is the minimum speed of the ball during this hole-in-one shot?
A golfer hits a ball at a speed of v at an angle of =30 degrees...
A golfer hits a ball at a speed of v at an angle of =30 degrees above the horizontal. The ball lands on a green which is elevated 7 m above the level at which the ball was struck. The ball travels a horizontal distance of 112 m. At what speed v was the ball hit?
A golfer prints an initial velocity of 30 m / s on a ball when hitting...
A golfer prints an initial velocity of 30 m / s on a ball when hitting it with his club. If the launch angle was 30 degrees. Determine the speed with which the ball hits the ground. A.30 m/s B.25 m/s C.24 m/s D.20 m/s
a golfer is teeing off to a raised green. the green is raised 5 meters, is...
a golfer is teeing off to a raised green. the green is raised 5 meters, is 20 m wide, sitting on a raised mesa which is 40 m wide at the base. he hits his ball with 7 iron, giving it a velocity of 39.0 m/s. He hits his ball with a 7 iron, giving it a velocity of 39 m/s at an angle at 40 degrees. 1) what is the vertical velocity? 2) what is the horizontal velocity? 3)...