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gatorgirl10152
28.01.2020 •
Physics
Particle initially located at the origin has an acceleration of vector a = 2.00ĵ m/s2 and an initial velocity of vector v i = 6.00î m/s. (a) find the vector position of the particle at any time t (where t is measured in seconds). ( t î + t2 ĵ) m (b) find the velocity of the particle at any time t. ( î + t ĵ) m/s (c) continued in next problem with new numbers. find the coordinates of the particle at t = 5.00 s. x = m y = m (d) find the speed of the particle at t = 5.00 s. m/s
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Ответ:
(a)![6t\hat{i} + t^2\hat{j}](/tpl/images/0474/6138/5eccc.png)
(b)![6\hat{i} + 2t\hat{j}](/tpl/images/0474/6138/1f18b.png)
(c)x = 30m, y = 25m
(d)11.66m/s
Explanation:
While position has a formula of
, velocity has a formula of a*t.
(a) the vector position of the particle at any time t is
(b) the vector velocity of the particle at any time t is
(c) at t = 5 s
So x = 30 m and y = 25m
(d)![v(5) = 6\hat{i} + 2*5\hat{j} = 6\hat{i} + 10\hat{j}](/tpl/images/0474/6138/0c27c.png)
with
So the speed quantity is
Ответ:
It helps someone to concentrate..on something.