Can someone please help with this 6 mark question thank you!

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Why do oxygen have a strong attractive force for electrons