Answer to Question #298406 in Mechanics | Relativity for Dark

Question

•Q2. the position of a particle moving along the x-axis is given by

                                x= 7.8 + 9.2t -2.1 t3  

Where x is in meters and t is in seconds.

a). What is the velocity at t=3.5s?

b). Is the velocity constant or continuous?

c). What is the displacement of the particle after 3.5 seconds?

d). Sketch   i. displacement - time graph

                    ii. Velocity – time graph

                    iii. Acceleration-time graph

For the particle motion within the time o ≤ t ≤ 6s

Answer 1

a)

$6.7~\frac ms$

b)

continuous

c)

$-11.4~m$