What is the average speed of a 20 kg object that is affected by a 11.8 N force?

How does convection affect our atmosphere? our layers of earth? our oceans?

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body