Atrain travels 225 kilometers in 2.5 hours. what is the train’s average speed?

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?