# Physics (HELP)

A soccer ball is kicked from the ground and lands 2.2 seconds later. If the ball was kicked at an angle of 55 degrees above horizontal, what was the ball's total initial speed?

1. 👍 0
2. 👎 0
3. 👁 712
1. For an object in projectile motion,

Time of flight = t
Initial speed = u
Angle with horizontal = θ
g = acceleration due to gravity

t = (2*u*sinθ)/g
=> u = (t*g)/(2*sin55)
= (2.2*9.8)/(2*0.819)
= 13.16 m/s

1. 👍 1
2. 👎 0
posted by Arora

## Similar Questions

1. ### Physics (HELP)

A soccer ball is kicked from the ground and lands 2.2 seconds later. What is the initial vertical component of the ball's velocity and how high does the ball get above the ground?

2. ### Physics

Initial Statement: A soccer ball is kicked with an initial horizontal velocity of 15 m/s and an initial vertical velocity of 14 m/s. 1) What is the initial speed of the ball? 20.518 2) What is the initial angle θθ of the ball

asked by Aidan on August 28, 2016

The height of a soccer ball that is kicked from the ground can be approximated by the function: y = -12⋅x2 + 48⋅x where y is the height of the soccer ball in feet x seconds after it is kicked. Find the time it takes the soccer

asked by lisa on July 1, 2013

The height of a soccer ball that is kicked from the ground can be approximated by the function: y = -12⋅x^2 + 48⋅x where y is the height of the soccer ball in feet x seconds after it is kicked. Find the time it takes the

asked by lisa on July 1, 2013
5. ### physics

A soccer ball is kicked with an initial horizontal velocity of 16 m/s and an initial vertical velocity of 17 m/s. 1) What is the initial speed of the ball? 2) What is the initial angle θθ of the ball with respect to the ground?

asked by Hallie on September 11, 2016
6. ### math

The height of a soccer ball that is kicked from the ground can be approximated by the function y=-16x^2 +32x where y is the height of the soccer ball on feet x seconds after it is kicked. Graph this function. find the soccer balls

asked by jill on April 9, 2014
7. ### physics

A soccer ball is kicked off of the ground at 17 ft/sec @ 30 degrees. Determine the maximum height above the ground the ball reaches and how far downfield the ball lands.

asked by Marina on January 20, 2014
8. ### math

A soccer ball is kicked upward from the ground and its height (in metres), t seconds after it is kicked, is given by the equation h(t)= -49t^2 + 19t. What wiil be the maximum height attained by the ball? And how much does it take

asked by Gabo on February 24, 2013
9. ### Physics - 2-D kinematics

A soccer ball is kicked with an initial horizontal velocity of 20 m/s and an initial vertical velocity of 16 m/s. I've calculated: Initial Speed: 25.61 m/s Angle: 38.66 degrees Maximum Height it reaches: 13.06 m Distance kicked:

asked by Anonymous on February 3, 2012
10. ### Physics

A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that

asked by Sandy on October 27, 2010

More Similar Questions