Aball is thrown horizontally from the top of a building 109 m high. the ball strikes the ground at a point 75 m horizontally away from and below the point of release. what is the speed of the ball just before it strikes the ground? (note: speed is magnitude of velocity at that point).

The speed of the ball just before it strikes the ground is 15.90 m/s.

Explanation:

Given that,

Height = 109 m

Distance = 75 m

We need to calculate the time

Using formula for horizontal projectile

Where, h = height

Put the value into the formula

We need to calculate the speed of the ball just before it strikes the ground

Using formula of speed

Where, v = speed

d = distance

t = time

Put the value into the formula

Hence, The speed of the ball just before it strikes the ground is 15.90 m/s.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).