Q1 a projectile is fired horizontally from a gun that is

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Q1. A projectile is fired horizontally from a gun that is 48.0 m above flat ground; emerging from the gun with a speed of 250 m/s. (a) how long does the projectile remain in the air? (b) At what horizontal distance from the firing point does it strike the ground? (c) What is the magnitude of the vertical component of its velocity as it strikes the ground?

Q2. Drawing on Erastothenes' method, if two observers are due north and south of each other and are separated by 490 km, what is the circumference of their spherical world if they see the same star on their meridian at altitudes of 29 degrees and 45 degrees in that order, and at the correct same time?

Reference no: EM13355175

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