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omartharwat
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a ball is projected vitically from the top of a building with hight of 45 m from Erath`s surface . it velocity is determind by the relation v= 40-10t how much time the ball will take to hit the ground?
A projectile is any object that is thrown or launched into the air and is subject to the force of gravity. Examples of projectiles include a baseball, a bullet, or a rocket.
The equation for calculating the time it takes for a projectile to hit the ground is t = √(2h/g), where t is the time in seconds, h is the initial height in meters, and g is the acceleration due to gravity (9.8 m/s²).
To solve a projectile problem, you need to first identify the given information, such as the initial height, launch angle, and initial velocity. Then, use the equation t = √(2h/g) to calculate the time it takes for the projectile to hit the ground. Finally, use the equation d = v0t + ½at² to calculate the horizontal distance traveled by the projectile.
The time it takes for a projectile to hit the ground is affected by the initial height, launch angle, and initial velocity. Other factors that may affect the time include air resistance and wind speed.
No, the time it takes for a projectile to hit the ground cannot be negative. Time is always a positive value and represents the duration of an event. If the calculated time is negative, it means that the projectile has not yet been launched or has already hit the ground.