Ken Warby set the world speed record on water on October 8, 1978. He drove his boat 1500.0 meters (distance) in 8.1018 seconds
(time). What was his average speed in m/s?

185.1 m/s

Explanation:

The average speed of an object is a scalar quantity telling us how fast is the object moving over a certain distance.

This quantity is calculated as

where

d is the distance covered by the object

t is the time elapsed

v is the average speed

In this problem we have:

d = 1500.0 m is the distance covered by Ken

t = 8.1018 s is the time taken

Substituting into the formula, we find the average speed:

c.

explanation:

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.