Q1; b: an An electric kettle contains a metal heating element to heat water. b. Name the process by which heat is transferred to heat all the water.

In the water in the pot, convection currents are set up, helping to heat the water uniformly. While watching the campfire you feel the heat of the glowing fire via radiation. Heat transfer in fluids generally takes place via convection.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s