To throw a curve ball, a pitcher gives the ball an initial angular speed of 36.0rad/s. when the catcher gloves the ball 0.595s later, its angular speed has decreased (due to air resistance) to 34.2rad/s. what is the ball’s angular acceleration and how many revolutions does the ball make before being caught?

As we know that angular speed is given as

times taken as

now we have

now we have

Now to find the number of revolutions we can use another equation

Now we have

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid