3. Find minimum speed of a projectile
to hit a target 200km away? Take g =10 ms-2
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Acceleration is a change in velocity over time. But is just says "change", not "increase."
Because technically speaking, slowing down is changing your speed over time, or what we sometimes call negative acceleration, also known as deceleration.
Force is required to change the speed of an object. In the barrel, the force to change the speed of the bullet comes from the highly pressurized gasses behind the bullet.
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