The 8 kg block is then released and accelerates to the right, toward the 2 kg block. the surface is rough and the coefficient of friction between each block and the surface is 0.4 . the two blocks collide, stick together, and move to the right. remember that the spring is not attached to the 8 kg block. find the speed of the 8 kg block just before it collides with the 2 kg block. answer in units of m/s.

3.258 m/s

Explanation:

k = Spring constant = 263 N/m (Assumed, as it is not given)

x = Displacement of spring = 0.7 m (Assumed, as it is not given)

= Coefficient of friction = 0.4

Energy stored in spring is given by

As the energy in the system is conserved we have

The speed of the 8 kg block just before collision is 3.258 m/s

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures