(5) A particle moves in space, its position is specified by the position vector r(1) = (1,r,t sint), t20. Then find at t=7 sec onds (a) Its position; (b) Its velocity (c) its acceleration
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- A particle is moving with velocity V(t) = ( pi cos (pi t), 3t2+ 1) m/s for 0 ≤ t ≤ 10 seconds. Given that the position of the particle at time t = 2s is r(2) = (3, -2), the position vector of the particle at t is?The equation for the position vector r(t) of the particle at time t isat an air show, a jets trajectory is following the curve y=x^2 if when the jet is at point (1,1), it has a speed of 500 km-h, determine its tangent vector to this point. Ans: r'=(100x5^1/2, 200x5^1/2
- give the position vectors of particles moving alongvarious curves in the xy-plane. In each case, find the particle’s velocityand acceleration vectors at the stated times, and sketch them asvectors on the curve. Motion on the parabola y = x2 + 1r(t) = ti + (t2 + 1)j; t = -1, 0, and 1The angle between the velocity and acceleration vectors at time t=0 isSuppose a > 0the vector function that describes the motion of a particle for t ≥ 0. Find the tangential and normal components of acceleration
- A projectile of mass m is launched from an initial position r0 with an initial velocity v0. Find its position vector as a function of time.Given a particle is moving in a curve r(t) = cos 6t i + sin 6t j + 10t k. Find the tangential component of its acceleration correct to two decimal places, at t = 3. Given a particle is moving in a curve r(t) = cos 6t i + sin 6t j + 10t k. Find the normal component of its acceleration correct to two decimal places, at t = 3.In Exercises 5–8, r(t) is the position of a particle in the xy-plane at time t. Find an equation in x and y whose graph is the path of the particle. Then find the particle’s velocity and acceleration vectors at the given value of t.