The cannonball''s velocity parallel to the ground

Reference no: EM1323339

Q1. A cannon tilted upward at theta = 35{rm ^ {circ}} fires the cannonball with a speed of 99 {rm m/s}.

At that instant, what is the component of the cannonball's velocity parallel to the ground?

Express the answer using two significant figures.

Q2. How would you describe why we have different atmospheric pressure on different level (height) of earth's atmosphere in molecular level (molecular behaviour and what causes such behaviour)?

Reference no: EM1323339

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