You have an old style reel lawn mower at home. No engine! You need to cut the grass but also finish in time to watch your favorite Tv show. How would you apply Newton’s second law of motion here?

the force on an object is equal to its mass times its acceleration.

Explanation:

the more heavier the object (lawn mower) the more time it will take to cut the grass due to that the tv show will be gone

A manually-operated lawn mower needs a lot of force to move. The mower mechanism and the energy needed to cut through the grass causes a lot of friction. In order to cut the grass faster, you need to overcome all that friction and get a net positive force on the lawn mower. Thus, you need to apply more force to it. It also helps a lot to reduce friction, so oil the mower and keep the blades sharp.

Explanation:

plato sample

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.