Hii please help i’ll give brainliest if you give a correct answer please

How are calculation for velocity and speed different

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?