Four rifles shown below are being fired horizontally (straight outward, off platforms). The bullets fired from the rifles are all identical, but the rifles propel the bullets at different speeds. The speed of each bullet and the height of each platform are given. All of the bullets miss the targets and hit the ground. Bullet A:  Speed 1200 m/s, platform height 20m Bullet B:  Speed 500 m/s, platform height 40m Bullet C:  Speed 800 m/s, platform height 40m Bullet D:  Speed 800 m/s, platform height 30m How much time each bullet will take to hit the ground? Explain reasoning: __________

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Projectile Motion