A4 g bullet is fired horizontally with a speed of 300m/s into 0.8 kg block of wood at rest on a table. if the coefficient of friction between block and table is 0.3, how far will the block slide approximately?

d = 3784.5 m

Explanation:

First bullet goes into the block and fixed into it

so here the speed of the combined is given by momentum conservation

so it is given as

here we know that

now from above formula

now the coefficient of friction on the floor is given as

so the deceleration is given as

now from equation of kinematics we know that

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=d/t

a="triangle"v/t

explanation:

a = acceleration