When kicking a football, the kicker rotates his leg about the hip joint Randomiz

Question

When kicking a football, the kicker rotates his leg about the hip joint Randomized Variables v = 35.5 m/s v_2 = 19 m/s d= 1.2 m If the velocity of the tip of the kicker's shoe is 35.5 m/s and the hip joint is 1.2 m from the tip of the shoe, what is the shoe tip's angular velocity in rad's? The shoe is in contact with the initially nearly stationary 0.500 kg football for 20.0 ms. What average force is exerted on the football in Newtons to give it a velocity of 19 m/s? Find the maximum range of the football in m, neglecting air resistance. R_max =

Explanation / Answer

here,

a)

speed of the shoe , v = 35.5 m/s

d = 1.2 m

the angular velocity , w = v/r

w = 35.5 /1.2 = 29.58 rad/s

the angular speed is 29.58 m/s

b)

m = 0.5 kg

t = 0.02 s

final speed , v = 19 m/s

let the accelration be a

v = u + a * t

19 = 0 + a * 0.02

a = 950 m/s^2

the average force , F = m * a

F = 475 N

c)

the maximum range ,R = v^2 * sin(2* theta) /g

for maximum range ,theta = 45 degree

R = 19^2 /9.8

R = 36.84 m

the maximum range is 36.84 m

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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