(Calculus) The tangent vector to (x(t), y(t)) is (x'(t), y'(t)). The tangent vector's length ||(x', y')|| = √(x'(t))² + (y'(t))² is the speed of the point along the curve at time t. Suppose that a projectile takes the path x(t) = 12t meters/sec, y(t) = -4.9t² + 14.7t meters/sec. (a) Determine the initial velocity of the projectile (at t = 0). (b) The projectile stops when its height y(t) is again 0. Find the value of t when it stops, its velocity at that time, and determine how far it travelled horizontally. (c) The projectile reaches its highest point when y'(t) = 0. Find the value of t at its highest point as well as its velocity and height at that time.
(Calculus) The tangent vector to (x(t), y(t)) is (x'(t), y'(t)). The tangent vector's length ||(x', y')|| = √(x'(t))² + (y'(t))² is the speed of the point along the curve at time t. Suppose that a projectile takes the path x(t) = 12t meters/sec, y(t) = -4.9t² + 14.7t meters/sec. (a) Determine the initial velocity of the projectile (at t = 0). (b) The projectile stops when its height y(t) is again 0. Find the value of t when it stops, its velocity at that time, and determine how far it travelled horizontally. (c) The projectile reaches its highest point when y'(t) = 0. Find the value of t at its highest point as well as its velocity and height at that time.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:(Calculus) The tangent vector to (x(t), y(t)) is (x'(t), y'(t)). The tangent vector's length
||(x', y')|| = √√(x'(t))² + (y'(t))² is the speed of the point along the curve at time t.
Suppose that a projectile takes the path x(t) = 12t meters/sec, y(t) = -4.9t² + 14.7t
meters/sec.
(a) Determine the initial velocity of the projectile (at t = 0).
(b) The projectile stops when its height y(t) is again 0. Find the value of t when it
stops, its velocity at that time, and determine how far it travelled horizontally.
(c) The projectile reaches its highest point when y'(t) = 0. Find the value of t at its
highest point as well as its velocity and height at that time.
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