A60kg block innitially at rest is pulled to the right a long a horizontal force of12n. find the speed of the block after it has moved 3m if the surface in contact have a coefficient of kinetic friction of 0.15

The speed of the block after it has moved 3M if the surface in contact have a coefficient of kinetic friction of 0.15  is 1.7s m/sec

Explanation:

Given:

mass of the block = 6.0 kg

Force with which the block is pulled = 12 N

Kinetic friction \mu= 0.15

Distance travelled  s = 3 m

To Find:

speed of the block after it has moved 3 metres =?

Solution :

W know that the friction formula is

Substituting the values,

Now Acceleration is Given by

a= 0.5

Initial velocity is u = 0

Also we know that,

So the equation becomes

Substituting the values,

v= 1.73 m/s

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.