Areconnaissance plane flies 556 km away from its base at 832 m/s, then flies back to its base at 1248 m/s. what is its average speed? answer in units of m/s

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.