At one instant, a 19.0-kg sled is moving over a horizontal surface of snow at 4.50 m/s. after 7.80 s has elapsed, the sled stops. use a momentum approach to find the magnitude of the average friction force acting on the sled while it was moving.

Frictional force, F = -10.96 N

Explanation:

It is given that,

Mass of the sled, m = 19 kg

Initial velocity of the sled, u = 4.5 m/s

After 7.80 s has elapsed, the sled stops. We need to find the magnitude of the average friction force acting on the sled while it was moving. The change in momentum is equal to the impulse imparted i.e.

F = -10.96 N

So, the average frictional force acting on the sled is 10.96 N. Hence, this is the required solution.

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

the plateau is likely to turn into a desert do to corrosion.