If mass A is 2.5 kg mass B is 3.5 kg and the frictionless pulley has a mass of 3.0 kg and a radius of 0.20 m, what is the velocity of A and B at 0.5 seconds? A. a= 1.20 m/s , b=0.82 m/s
B. a= -0.82 m/s, b= 0.82 m/s
C. a= -0.82, m/s, b= 1.20 m/s
D. A= 0.82m/s, b= 0.82 m/s

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me