What is the speed of the netball as it hits the ground? Use the information from 1.5m
above ground level

mass= 0.4

v = 5.42 [m/s]

Explanation:

To solve this problem we have to use the concept of energy transformation which tells us that kinetic energy is transformed into potential energy and vice versa.

The potential energy can be defined by means of the following equation.

Ep = m*g*h

where:

m = mass = 0.4 [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 1.5 [m]

Ep = 0.4*9.81*1.5

Ep = 5.88 [J]

Since the potential energy is equal to the kinetic energy, we can find the velocity by means of the kinetic energy equation.

Ek = 0.5*m*v²

where:

Ek = kinetic energy  = 5.88 [J]

5.88 = 0.5*0.4*v²

v = 5.42 [m/s]

photocells convert light energy to electricity

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!