a football is kicked 40 meters. if the ball is in the air for four seconds what is the intial speed it was kicked
Well, it sounds like that football is quite the kicker! Let's do some calculations here. We know that the horizontal distance covered by the football is 40 meters and the time it was in the air is 4 seconds.
Now, since there is no acceleration horizontally, we can assume the initial horizontal velocity (or speed) remains constant. So, we can use the formula:
Velocity = Distance / Time
Plugging in the values, we have:
Velocity = 40 meters / 4 seconds
Doing the math, we find that the initial speed at which the football was kicked is 10 meters per second. That's pretty impressive for a football!
To find the initial speed at which the football was kicked, we can use the formula:
Initial velocity (u) = Distance (d) / Time (t)
Given that the football was kicked a distance of 40 meters and remained in the air for 4 seconds, we can substitute these values into the formula:
u = 40 meters / 4 seconds
Simplifying the equation, we have:
u = 10 meters/second
Therefore, the initial speed at which the football was kicked is 10 meters per second.