# The position vector r describes the path of an object moving in space. Position Vector Time...

###### Question:

The position vector r describes the path of an object moving in space. Position Vector Time r(t) = 12; + tj + 243/2k t = 4 (a) Find the velocity vector, speed, and acceleration vector of the object. v(t) = s(t) a(t) (b) Evaluate the velocity vector and acceleration vector of the object at the given value of t. (4) = a(4) 11
Use the model for projectile motion, assuming there is no air resistance and g = 32 feet per second per second. Determine the maximum height and range of a projectile fired at a height of 6 feet above the ground with an initial speed of 300 feet per second and at an angle of 45° above the horizontal ( maximum height maximum range ft ft

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