Question

If I kick a soccer ball (from the ground), and it reaches a height of 45...

If I kick a soccer ball (from the ground), and it reaches a height of 45 meters, for how long would it be on the air before it hits the ground (HINT: The distance and time going up should be the same as when going down )?

Homework Answers

Answer #1

initial speed u of ball is obtained from the following equation of motion

" v2 = u2 - 2 g h "

where v is final speed that is zero when reaches maximum height h and g is acceleration due to gravity.

If the ball reaches maximum height 45 m, then initial speed u is calculated as

Time to reach maximum height = u/g = 29.7/9.8 = 3.03 s

Since it takes equal time from maximum height to reach ground,

time duration of the ball in air = 2 3.03 = 6.06 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
You kick a soccer ball with a force (F) of 1200 N at an angle of...
You kick a soccer ball with a force (F) of 1200 N at an angle of 45 degrees. The soccer ball has an initial velocity of (v i ) of 5 m/s at 0 degrees , a mass (m) of 0.4 kg, and the time of contact (t) between yo ur foot and the ball is 0.01 s. • H ow far does the ball travel before it hits the ground (∆s x ) ? • Express your initial velocity...
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 ball is kicked upwards from a rooftop 6m above the ground. It reaches a maximum...
A ball is kicked upwards from a rooftop 6m above the ground. It reaches a maximum height of 9m. At 10s, the ball is 1m above ground. Given that the initial kick is at 0s and the ball follows a quadratic trajectory, at what time does the ball reach its maximum height? Give your answer in exact form. Hint: your answer must be positive
A ball is shot from the ground into the air. At a height of 6.9 m,...
A ball is shot from the ground into the air. At a height of 6.9 m, its velocity is V=7.5i+6.9j m/s, with i horizontal and j upward. (a) To what maximum height does the ball rise? (b) What total horizontal distance does the ball travel? What are the (c) magnitude and (d) angle (below the horizontal; give as negative) of the ball's velocity just before it hits the ground?
A soccer ball is kicked from the ground into The air with a velocity of 25...
A soccer ball is kicked from the ground into The air with a velocity of 25 m/s at 45 degrees above horizontal. To the nearest meter, how high did the ball fly? How far did the ball travel before hitting the ground again assuming there was no wind resistance? (round to the nearest meter)
1. A baseball player hits a ball that reaches a maximum height of 16.9 m and...
1. A baseball player hits a ball that reaches a maximum height of 16.9 m and lands 98 m away. The ball contacts the bat 1.25m above the ground and has a launch angle of 30?? . a. What is the initial velocity? b. How long is the ball in the air? c. Determine the velocity vector, in vector notation, when the ball strikes the ground.
A ball drops from a height of 2 meters. Each time it hits the ground, it...
A ball drops from a height of 2 meters. Each time it hits the ground, it bounces up 68 percent of the height it fall. Calculate the coefficient of restitution.
A blue ball is thrown upward with an initial speed of 21.2 m/s, from a height...
A blue ball is thrown upward with an initial speed of 21.2 m/s, from a height of 0.5 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 11.7 m/s from a height of 25.7 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2. A) What is the speed of the...
a ball is shot from the ground into the air. at a height of 9 m...
a ball is shot from the ground into the air. at a height of 9 m it’s horizontal velocity is 8m/s and vertical velocity is 6 m/ a. to what maximum does the ball rose b. total horizontal distance does the b-ball travel c. what are the magnitudes and direction of the bball's velocity before it hits the ground
A football is kicked from ground level at an angle of 47 degrees. It reaches a...
A football is kicked from ground level at an angle of 47 degrees. It reaches a maximum height of 10 meters before returning to the ground. How long will the football spend in the air, in seconds?