In the previous simulation, all the projectiles left the ground and returned to
ID: 1537384 • Letter: I
Question
In the previous simulation, all the projectiles left the ground and returned to the ground. We can use the same physics formulas to describe the motion of projectiles that leave the above or below the ground and may or may not return to the same height. We can also study the effect of a downward firing angle on a projectiles path. The tape measure can be used to measure not only distance but also height. Play with the sum and observe the actions of a projectile that is not launched at ground level. How does adding initial height affect flight time? Why do you suppose this is? What formula can we use that supports your explanation? How docs adding initial height affect maximum range? Why do you suppose this is? What formula can we use that supports your explanation?Explanation / Answer
The vertical distance which needs to be covered when using initial height is more than normal projectile launch. Thus, the projectile remains in motion for a longer time.
Another way to put it is that an additional height means that the change in velocity of the projectile will be more and so for a constant acceleration : g (=9.8 m/s2) , the time the projectile remains in motion is larger.
t = (vy - uy )/a
H = Ho + ut + (1/2)ayt2
b] Adding initial height means the projectile will travel for a longer time. Since the horizontal component of the velocity is independent of the acceleration due to gravity therefore, x = ux t will be larger for large t.
this implies that the range of the projectile will increase.
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