PARAMETRICS AND VECTORS
PARAMETRICS AND VECTORS
WORKSHEET 2
Work the following on notebook paper. Use your calculator on problems 7-11 only.
1. If [pic]and [pic], find [pic] in terms of t.
2. Write an integral expression to represent the length of the path described by the parametric equations [pic] and [pic] for [pic].
3. For what value(s) of t does the curve given by the parametric equations [pic] and [pic] have a vertical tangent?
4. For any time [pic], if the position of a particle in the [pic]plane is given by [pic] and [pic], find the acceleration vector.
5. Find the equation of the tangent line to the curve given by the parametric equations [pic] and [pic] at the point on the curve where [pic].
6. If [pic] and [pic] are the equations of the path of a particle moving in the [pic]plane, write an equation for the path of the particle in terms of x and y.
7. A particle moves in the [pic]plane so that its position at any time t is given by [pic] and [pic]. What is the speed of the particle when [pic]?
8. The position of a particle at time [pic] is given by the parametric equations [pic] and [pic].
a) Find the magnitude of the velocity vector at [pic].
b) Find the total distance traveled by the particle from [pic] to [pic].
c) When is the particle at rest? What is its position at that time?
9. An object moving along a curve in the [pic]plane has position [pic] at time [pic] with [pic] and [pic]. Find the acceleration vector and the speed of the object when [pic].
10. A particle moves in the [pic]plane so that the position of the particle is given by [pic] and [pic], [pic]. Find the velocity vector when the particle’s vertical position is [pic].
11. An object moving along a curve in the [pic]plane has position [pic] at time t with [pic] and [pic] for [pic]. At time [pic], the object is at the position [pic].
a) Write an equation for the line tangent to the curve at [pic].
b) Find the speed of the object at time [pic].
c) Find the total distance traveled by the object over the time interval [pic].
d) Find the position of the object at time [pic].
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