A single, non-constant force acts in the x direction on an object of mass m that is constrained to move along the x-axis. As a result the object\'s position as a function of time is:x(t)=P+Qt+Rt^3How much work is done by this force from t = 0 s to final time T? Express your answer in terms of P, Q, R, m, and T.

Work done is given as

Explanation:

As we know that the position of object is given as

now we know that rate of change in position of object is known as velocity

so we have

now we have

initial speed at t = 0

at t = T final speed is given as

now work done is change in kinetic energy

the first, second, and fifth options

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .