A60-kg (including the passenger) sled is subject to a net force of 20 n pushing in the direction of the sled’s motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest. at this point the sled is released as it starts down a 10.0° incline. however, the snow is not very deep, and the sled stops after having moved an additional 35 m. what is the work done by friction while the sled is on the incline?

the bal will not change its velocity.

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

neither accurate nor precise.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.