Question

A straight highway 50 kilometers long connects two cities c1 and c2. Prove that it is impossible to travel from c1 to c2 by motorcycle in exactly one hour without the speedometer reading 50 kph at least once.

Answer 1

we know that speed=distance/time given time = 1h and distance= 50 kilometers
and speed = 50 kilometers/1hour = 50 kilometers/hour

Answer 2

Thanks.

Answer 3

Could you help with another problem @zephy?

A softball player chasing a fly ball runs in a line towards the center field fence. Suppose the player's velocity is v(x)=0.25x^2-1.10x+25 when the player is located at the point x in the field. What is the acceleration when the player is 2 meters from the fence?