A block is pushed up a rough inclined plane of 45^(@) with a velocity u. The block rises up and then comes down sliding to have a velocity u/2 at the bottom. The coefficient of sliding friction between block and the plane is

A block is pushed up a rough inclined plane of 45^(@) with a velocity

1.	A block is pushed up a rough inclined plane of 45^(@) with a velocity u. The block rises up and then comes down sliding to have a velocity u/2 at the bottom. The coefficient of sliding friction between block and the plane is
Answer» `0.5` `0.6` `0.8` `0.45` ANSWER :B