please help me do thisthe answers :a) s= t^3 - 9t^2 - 21t - 1b) 117 mc) t > 7 5 An object moves in a straight line.It passes through a fixedpoint O. The velocity of the object,vm s', at time t seconds is givenby v= 3t2 – 18t- 21 and itsdisplacement from point O is s m.After 1 s, the object is at 30 m tothe left of point O.S6.Find(a) s in terms of t, (b) the total distance travelled bythe particle from thebeginning of the motion to theinstant its acceleration isinstantaneously zero,(c) the range of time when theobject moves to the right.[Take the motion to the right as thepositive direction.]

Given v=3t2-18t-21 At t=1s ,s=-30 m

Answered: 5 An object moves in a straight line.…

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5 An object moves in a straight line. It passes through a fixed point O. The velocity of the object,

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 113CP: The position of a particle moving along the x -axis varies with time according to x(t)=5.0t24.0t3 ....

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Question

please help me do this the answers : a) s= t^3 - 9t^2 - 21t - 1 b) 117 m c) t > 7

5 An object moves in a straight line.
It passes through a fixed
point O. The velocity of the object,
vm s', at time t seconds is given
by v= 3t2 – 18t- 21 and its
displacement from point O is s m.
After 1 s, the object is at 30 m to
the left of point O.
S
6.
Find
(a) s in terms of t,

(b) the total distance travelled by
the particle from the
beginning of the motion to the
instant its acceleration is
instantaneously zero,
(c) the range of time when the
object moves to the right.
[Take the motion to the right as the
positive direction.]

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