The only force acting on a 2.0 kg body as it moves along a positive x axis has an x component fx = −6 x n, with x in meters. the velocity at x = 3.0 m is 8.0 m/s. (a) what is the velocity of the body at x = 4.0 m? (b) at what positive value of x will the body have a velocity of 5.0 m/s?

a-0

b-2 m

Explanation:

Given mass of the body is 2 kg

Force acting on the body =-6x N

Velocity at x=3m is 8m/s

Now acceleration of the body is -3x

a=-3x

=-3x

vdv=-3xdx

integrating both sides we get

=+c

Now at x=3m v=8m/s

substituting values

c=

Thus

Velocity will be zero after

thus velocity of the body is zero at x=4 m

v=5m/s

25=-3x^2+37

x=2 m

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid