In the fastest measured tennis serve, the ball left the racquet at 73.14 m/s. a served tennis ball is typically in contact with the racquet for 27.0 ms and starts from rest. the direction of the velocity of the ball just after it left the racquet is the positive x direction. assume constant acceleration. a. what was the x component of the ball's acceleration during this serve?
b. how far did the ball travel during the serve?

learn it on the intertant so you can solve

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

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.

a sonic boom is a loud boom that breaks the sound barrier

explanation: