Tyler traveled from town f to town g. for the first 2.5 hours, he traveled at a constant speed of 60 km/h. for the next 1.5 hours, he traveled at a constant speed of 80 km/h. what was the average speed for the whole journey?

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.

If you divide a speed in miles per minute by 60, you get the same speed expressed in miles