What Is the Speed of the Ball When Kicked Back in This Soccer Scenario?

In summary, Jack and John are playing soccer 6m apart from each other. Jack kicks the ball to John with a velocity of 5.4 m/s and after 2.6 s, John kicks the ball back to Jack. Assuming no deceleration and neglecting the time for John to kick the ball, the speed of the ball when it's kicked back to Jack is 2.3 m/s. However, there may be an error in the calculation.
  • #1
OUstudent
14
0

Homework Statement


Jack and John are standing 6m apart from each other playing soccer. Jack kicks the ball to John and John kicks it back immediately. Jack kicked the ball with a velocity of 5.40 m/s and after 2.6 s he got the ball back. Suppose there's no deceleration of the ball when it's moving and that we can neglect the time for John to kick the ball. What is the speed of the ball when it's kicked back to Jack?


Homework Equations



V= D/T

The Attempt at a Solution


5.4 m/s = 6 /t = 1.11 seconds
1.11 + 2.6 = 3.71 seconds total
3.71 = ( (6/5.4) + (6/v) ) = 2.3

I'm doing something wrong, because I'm not getting the right answer.
thanks in advance
 
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  • #2
OUstudent said:
5.4 m/s = 6 /t = 1.11 seconds
1.11 + 2.6 = 3.71 seconds total
1.11 is the time it takes for the ball to reach John. 2.6 is the total time.
 
  • #3
I'm an idiot...

Thanks
 

FAQ: What Is the Speed of the Ball When Kicked Back in This Soccer Scenario?

1. What is the difference between speed and velocity?

Speed is a measure of how fast an object is moving, while velocity is a measure of how fast an object is moving in a specific direction.

2. How do you calculate velocity?

Velocity is calculated by dividing the change in an object's displacement by the change in time.

3. Is velocity a vector or a scalar?

Velocity is a vector quantity because it has both magnitude (speed) and direction.

4. What is the standard unit for velocity?

The standard unit for velocity is meters per second (m/s) in the metric system, and feet per second (ft/s) in the imperial system.

5. Can an object's velocity be constant while its speed is changing?

Yes, an object's velocity can be constant while its speed is changing if the object is moving in a circular path at a constant speed. This is because the direction of the object's velocity is constantly changing, even though the speed remains the same.

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