Question #267143

The position of a point is given as a function of time by x= 4t − 6t + 2t− 1 , where x and t are expressed in meters and seconds. Determine the position, the velocity, and the acceleration of the particle when t= 2 s.

1
Expert's answer
2021-11-16T13:40:39-0500

Given:

x=46t+2t2x=4-6t+2t^2

t=2st=2\:\rm s


The position

x(2)=462+222=0x(2)=4-6*2+2*2^2=0

The velocity

v(2)=x(2)=6+42=2m/sv(2)=x'(2)=-6+4*2=2\:\rm m/s

The acceleration

a(2)=v(2)=4m/s2a(2)=v'(2)=4\:\rm m/s^2


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