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6. A projectile is fired with an initial speed vo 30.0 m/s from level ground at a target that is on the ground, at distance R-20.0 m. a) (5) What is the least launch angle1 b) (51) What is the largest launch angle? 7. A particle is in uniform circular motion about the origin of an XY coordinate system, moving clockwise with a period of 10.00 sec. At one instant, its position vector is r =-201 m. At that instant, a) (5) what is the velocity in unit vector notation? b) (5) what is the magnitude and direction of acceleration? ) (5) 5 seconds later, what is the velocity in unit vector notation?
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Answer #1

6) %-30 m /,8 R 20-o 2日 に 12-5 3 Α) θι- 6.290

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