In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then hop on the sled as it starts to careen down the steeply sloped track. in one event, the sled reaches a top speed of 9.2 m/s before starting down the initial part of the track, which is sloped downward at an angle of 4.0°. what is the sled's speed after it has traveled the first 140 m?

Explanation:

As we know by force equation that force along the inclined planed due to gravity is given as

so the acceleration due to gravity along the plane is given as

now we have

now we know that

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

mistakes are ok