Abicycle travels 15km in 30 mins. what is the average speed? show all work to support answer.

30 km/hr

Explanation:

There are no stops so the equation is just d = r*t

r = 15 km

t = 30 minutes = 30/60 hour = 1/2 hour = 0.5 hours.

r = d/t

r = 15 km / 0.5 hour

r = 30 km / hour

That is a pretty good clip for someone who is just a 3 times a week cyclist.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.