# Physics (quick check)

posted by .

A football is kicked at ground level with a speed of 20.8m/s at an angle of 23.3 degress to the horizontal. How much later, in seconds, does it hit the ground?

Tf =(-20.8m/s x Sin 23.3)/-9.80m/s^2
=0.839s

this doesn't sound right to me

• Physics (quick check) -

h(t)=h(0)+vvt-1/2 g t^2
0=0+20.8sin23.3 t - 4.9t^2
t=0, t=20.8sin23.3/4.9

so your denominator is wrong.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### physics

A ball is kicked at ground level with a speed of 15.0 m/s at an angle of 35.0° to the horizontal. How much later does it hit the ground?
2. ### Ap physics

A football is kicked at ground level with a speed of 10.0 m/s at an angle of 37.0° to the horizontal. How much later does it hit the ground?
3. ### Ap physics

A football is kicked at ground level with a speed of 10.0 m/s at an angle of 37.0° to the horizontal. How much later does it hit the ground?
4. ### Physics

A football is kicked at ground level with a speed of 20.7 m/s at an angle of 34.6° to the horizontal. How much later does it hit the ground?
5. ### Physics

A football is kicked at ground level with a speed of 19.8 m/s at an angle of 32.2 degrees to the horizontal. Question: How much later does the football hit the ground?
6. ### Physics

A football is kicked at ground level with a speed of 17.9m/s at an angle of 39.0∘ to the horizontal. How much later does it hit the ground?
7. ### physics

A football is kicked at ground level with a speed of 15.4 m/s at an angle of 34.7° to the horizontal. How much later does it hit the ground?
8. ### physics

A football is kicked at ground level with a speed of 17.9m/s at an angle of 36.0∘ to the horizontal. How much later does it hit the ground?
9. ### Physics

A football is kicked at ground level with a speed of 15.0 m/s at an angle of 39.0° to the horizontal. How much later does it hit the ground?
10. ### Physics

A football is kicked at ground level with a speed of 17.7 m/s at an angle of 39.8 ∘ to the horizontal. How much later does it hit the ground?

More Similar Questions