# physics

posted by .

15. During the opening kickoff of a college football game, the kicker kicks a football with an initial velocity of 27.5 m/s at an angle of 41° above horizontal.
I. What is the time of flight for the ball?
II. How far does it travel before hitting the ground?
III. What is the maximum height the football reaches?

• physics -

first half of flight:
u = 27.5 cos 41 = 20.75 m/s forever
Vi = 27.5 sin 41 = 18 m/s initial speed up
v = 18 - 9.81 t
at top v = 0
9.81 t = 18
t = 1.84 seconds upward
2 t = 3.68 seconds in air

3.68 seconds* 20.75 m/s = 76.3 meters range

h = 18 (1.84) -4.9(1.84)^2

## Similar Questions

1. ### physics

a football place kicker kicks the ball with a velocity of 18.2 m/s at an angle of 53 degrees. how far from the kicker will the football hit the ground?
2. ### physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 360 m/s2. The ball is launched at an angle of 46° above the ground. …
3. ### PHYSICS

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 340 m/s2. The ball is launched at an angle of 51° above the ground. …
4. ### Physics

A kickoff sends a football with an initial velocity of 25 m/s at an angle of 50 degrees above the horizontal. a) find the x and y components of the velocity b) find the time the ball is in the air c) find the horizontal distance the …
5. ### Physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 390 m/s2. The ball is launched at an angle of 46° above the ground. …
6. ### Physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0475 s, during which time it experiences an acceleration of 417 m/s2. The ball is launched at an angle of 59.7° above the …
7. ### physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0771 s, during which time it experiences an acceleration of 162 m/s2. The ball is launched at an angle of 53.3° above the …
8. ### physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0442 s, during which time it experiences an acceleration of 231 m/s2. The ball is launched at an angle of 55.0° above the …
9. ### Physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 380 m/s2. The ball is launched at an angle of 51° above the ground. …
10. ### Physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0854 s, during which time it experiences an acceleration of 217 m/s2. The ball is launched at an angle of 58.3° above the …

More Similar Questions