You are standing next to your friend, ready to race across a 100 meter field. when the go signal is given, you take 5 seconds to get to your maximum sprinting speed of 12 miles per hour (that’s about 5.4 meters per second). what is your acceleration, in meters per second squared?

We can find the acceleration by using this formula

a= vf-vi/ t

To find the acceleration to reach the maximum velocity

.  meters per second squared

We can find the distance coverted in first 5 seconds by following equation

s= vi t+ ½ at^2

He took 5 seconds to cover 13.5 meters and assuming he runs for the rest of the race at his maximum sprinting speed of 5.4 meters per seconds

Thus the total time to complete the race is

Now we can find the acceleration of the complete 100 meter race by using the first equation.

So the overall acceleration will be 0.25 meters per second squared.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it