7. Two campers dock a canoe. One camper steps onto the dock. This camper has a mass of 80 kg and moves forward at 4.0 m/s. With what speed and direction do the canoe and the other camper move if their combined mass is 110 kg?

1.68 m/s

Explanation:

Given that,

Mass of a camper, m₁ = 80 kg

Initial speed of the camper, v₁ = 4 m/s

We need to find the speed and the direction of the canoe and the camper if their combined mass is 110 kg, Let it is V. The momentum of the system remains conserved. Using the law of conservation as follows :

So, the combined speed of canoe and the camper is 1.68 m/s.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.