A girl throws a ball at an inclined wall from a height of 3 ft, hitting the wall at A with a horizontal velocity v0 of magnitude 45 ft/s. Knowing that the coefficient of restitution between the ball and the wall is 0.9 and neglecting friction, determine the distance d from the foot of the wall to the Point B where the ball will hit the ground after bouncing off the wall.

The diagram that describes the question is attached as a file below

Explanation:

Tangent velocity,

....................(1)

Along the normal:

.................(2)

Dividing equation (1) by equation (2)

Time taken from A to E, t₁

Time taken from E to B, t₂

Total time, t = 1.15 + 2.23

t = 3.38 s

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 .

multiply 2kg by latent heat of vap