I dont need the work shown I just need the answers in the

A particle\'s position is given by x 7 7t 4t (where t is in seconds and xis in meters). (a) What is its velocity at t 1 s? (Indicate the direction with the sign of your answer. 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? positive O negative O neither (c) What is its speed just then? X m/s (d) is the speed increasing or decreasing just then? increasing O decreasing O neither 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. NONE velocity function is the time of the position function. The sign of the velocity vector gives the direction of travel on the axis. The particle stops when the velocity zero. s (f Is there a time after t 1.9 s when the particle is moving in the negative direction of x? If so, give the time t; if not, enter NONE.

Solution

I am writing only the answers as you told

a) 1
b) positive
c) 1
d) increasing
e)0.825 or 7/8
f) NONE

a) 5.958
b) 1.912