A particle's position is given by x = 7 - 14t + 2t2 (where t is in seconds and x is in meters).(a) What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.)XThe velocity function is the time derivative of the position function. The sign of the velocity vector gives thedirection of travel on the x axis. The particle stops when the velocity is zero. m/s(b) Is it moving in the positive or negative direction of x just then?O positiveneitherO negative(c) What is its speed just then?X m/s(d) Is the speed increasing or decreasing just then?O increasingO decreasingO neitherX(Try answering the next two questions without further calculation.)(e) Is there ever an instant when the velocity is zero? If so, give the time t; if not, enter NONE.xThe velocity function is the time derivative of the position function. The sign of the velocity vector gives thedirection of travel on the x axis. The particle stops when the velocity is zero. s(f) Is there a time after t = 4.5 s when the particle is moving in the negative direction of x? If so, give the time t; if..not..enter.NONE.Enter a number. unction is the time derivative of the position function. The sign of the velocity vector gives thedirection of travel on the x axis. The particle stops when the velocity is zero, s

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Description: A particle's position is given by x = 7 - 14t + 2t2 (where t is in seconds and x is in meters).(a) What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.)XThe velocity function is the time derivative of the position f

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A particle's position is given by x = 7 - 14t + 2t2 (where t is in seconds and x is in meters). (a) What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.) X The velocity function is the time derivative of the position function. The sign of the velocity vector gives the direction of travel on the x axis. The particle stops when the velocity is zero. m/s (b) Is it moving in the positive or negative direction of x just then? O positive O neither Onegative (c) What is its speed just then? X m/s

A particle's position is given by x = 7 - 14t + 2t2 (where t is in seconds and x is in meters). (a) What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.) X The velocity function is the time derivative of the position function. The sign of the velocity vector gives the direction of travel on the x axis. The particle stops when the velocity is zero. m/s (b) Is it moving in the positive or negative direction of x just then? O positive O neither Onegative (c) What is its speed just then? X m/s

College Physics

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A particle's position is given by x = 7 - 14t + 2t2 (where t is in seconds and x is in meters).
(a) What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.)
X
The velocity function is the time derivative of the position function. The sign of the velocity vector gives the
direction of travel on the x axis. The particle stops when the velocity is zero. m/s
(b) Is it moving in the positive or negative direction of x just then?
O positive
neither
O negative
(c) What is its speed just then?
X m/s
(d) Is the speed increasing or decreasing just then?
O increasing
O decreasing
O neither
X
(Try answering the next two questions without further calculation.)
(e) Is there ever an instant when the velocity is zero? If so, give the time t; if not, enter NONE.
x
The velocity function is the time derivative of the position function. The sign of the velocity vector gives the
direction of travel on the x axis. The particle stops when the velocity is zero. s
(f) Is there a time after t = 4.5 s when the particle is moving in the negative direction of x? If so, give the time t; if
..not..enter.NONE.
Enter a number. unction is the time derivative of the position function. The sign of the velocity vector gives the
direction of travel on the x axis. The particle stops when the velocity is zero, s

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