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a projectile is fired straight upward at 100m/s. how fast is it moving at the instant it reaches the top of its trajectory

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TaylorBayley
0m/s, when a projectile is at the top of a vertical ascent it has a velocity of 0 for an infinitesimally small amount of time before it begins to descend under the force of gravity.
onyebuchinnaji

The velocity of the object at the instant it reaches the top of its trajectory is zero.

Final velocity of an object at the top

The velocity of an object decreases as the object moves upwards and becomes zero at the maximum height. The velocity of the object increases as the object begins to move downwards and becomes before the object hits the ground.

Thus, the velocity of the object at the instant it reaches the top of its trajectory is zero.

Learn more about velocity here:  https://brainly.com/question/6504879

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