Aball is thrown horizontally. which factor will increase the flight time of the ball?

Let the ball is thrown horizontally with some speed "v" and its height from floor is "h"

now here we can say that in vertical direction we have

initial speed is

acceleration is given as

now we can use kinematics

now plug in all values

now by solving above equation we have

So here it only depends on the height so in order to increase the time we need to increase the height.

explanation:

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as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper