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A bullet is fired horizontally with an initial velocity of 300 m/s from a tower 20 m high.If air resistance is negligible,the horizontal distance the bullet travels before hitting the ground is about
Q3: After rolling halfway down an incline,a marble's
Q5: The Bernoulli effect causes passing ships to
Q6: In science,facts<br>A)are absolute.<br>B)may change.<br>C)mean very little.<br>D)are more
Q24: A freight train rolls along a track
Q30: Compared to the mass of a certain
Q32: Which has more skin,an elephant or a
Q33: Most of the mass of material that
Q41: Which has the greater density,a lake full
Q43: When snow forms in clouds,the surrounding air<br>A)warms.<br>B)cools.<br>C)neither
Q50: When properly used,a hydraulic press,like a wheel