1. 16 pts) The position r of an object in an xy plane varies as r...
The position r of a particle moving in an xy plane is given by r = (4.00t^3 - 4.00t) i + (4.00 - 1.00t^4) j with r in meters and t in seconds. In unit-vector notation, calculate (a) r, (b) V, and (c) a for t = 2.00 s, (d) What is the angle between the positive direction of the x axis and a line tangent to the particle's path at t = 2.00 s? Give your answer in the...
The position ModifyingAbove r With right-arrow of a particle moving in an xy plane is given by ModifyingAbove r With right-arrow equals left-parenthesis 4 t cubed minus 3 t right-parenthesis ModifyingAbove i With caret plus left-parenthesis 6 minus 2 t Superscript 4 Baseline right-parenthesis ModifyingAbove j With caret with ModifyingAbove r With right-arrow in meters and t in seconds. In unit-vector notation, calculate (a)ModifyingAbove r With right-arrow, (b)v Overscript right-arrow EndScripts, and (c)a Overscript right-arrow EndScripts for t = 2...
The vector position of a 3.55 g particle moving in the xy plane varies in time according to r1 = (3î + 3ĵ)t + 2ĵt2 where t is in seconds and r is in centimeters. At the same time, the vector position of a 5.80 g particle varies as r2 = 3î − 2ît2 − 6ĵt. (a) Determine the vector position (in cm) of the center of mass of the system at t = 2.60 s. b) Determine the linear...
The coordinates of an object moving in the xy plane vary with time according to the equations x-_9.47 sin at and y = 4.00-9.47 cos út, where ω is a constant, x and y are in meters, and t is in seconds. (a) Determine the components of velocity of the object at t = O. (Use the following as necessary: ω·) V--9.47 cos(t),9.47 sin(m/s (b) Determine the components of the acceleration of the object at t-0. (Use the following as...
An object is moving in the xy-plane and its position after t-seconds is r(t)-t 2, t2 - 2t>. (a) Find the position of the object at time t-5. C 3 15 (b) At what time is the object at the point (O, 0)? t- (c) Does the object pass through the point (4, 28)? Yes 0 No (d) Find an equation in x and y whose graph is the path of the object.
The diagram below shows the xy position of a object every 4 seconds starting at t- 0. The distance between gridlines is 10 meters. What is true of the x acceleration? [ Select ) What is true of the y acceleration? Select l What is the best estimate of the y-velocity at t- 10s? Select Please remind yourself how to represent velocities and accelerations on motion diagrams. e 16 8 0
The position ModifyingAbove r With right-arrow of a particle moving in an xy plane is given by ModifyingAbove r With right-arrow equals left-parenthesis 3.00 t cubed minus 4.00 t right-parenthesis ModifyingAbove i With caret plus left-parenthesis 5.00 minus 1.00 t Superscript 4 Baseline right-parenthesis ModifyingAbove j With caret with ModifyingAbove r With right-arrow in meters and t in seconds. In unit-vector notation, calculate (a)ModifyingAbove r With right-arrow, (b)v Overscript right-arrow EndScripts, and (c)a Overscript right-arrow EndScripts for t = 3.00...
The position of an object moving along an x axis is given by x = 3.03 t - 4.04 t2 + 1.08 t3, where x is in meters and t in seconds. Find the position of the object at the following values of t: (a) 1 s, (b) 2 s, (c) 3 s, and (d) 4 s. (e) What is the object's displacement between t = 0 and t = 4 s? (f) What is its average velocity from t...
The position T of a particle moving in an xy plane is given by (3.006.00(3.00 1.00r with in meters and t in seconds. In unit-vector notation, calculate (a) r, (b) v, and (c) a fort 3.00 s. (d) What is the angle between the positive direction of the x axis and a line tangent to the particle's path at t- 3.00 s? Give your answer in the range of (-180°; 180°) (a) Number (b) Number (c) Number (d) Number j...
In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 7.00 cos (4t + ) where x is in centimeters and t is in seconds. (a) At t = 0, find the position of the piston. 6.30 cm (b) At t = 0, find velocity of the piston. -9.11 How do you find the velocity v(t) of an object if you know the position as a function of time,...