You throw a ball of mass 1 kg straight up. you observe that it takes 2.2 s to go up and down, returning to your hand. assuming we can neglect air resistance, the time it takes to go up to the top is half the total time, 1.1 s. note that at the top the momentum is momentarily zero, as it changes from heading upward to heading downward.

(a) use the momentum principle to determine the speed that the ball had just after it left your hand.
vinitial = ? ? m/s

(b) use the energy principle to determine the maximum height above your hand reached by the ball.
h = ? ? m

10.791 m/s

5.93505 m

Explanation:

m = Mass of ball

= Final velocity

= Initial velocity

= Final time

= Initial time

g = Acceleration due to gravity = 9.81 m/s²

From the momentum principle we have

Force

So,

The speed that the ball had just after it left the hand is 10.791 m/s

As the energy of the system is conserved

The maximum height above your hand reached by the ball is 5.93505 m

  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

a. spokes of a wheel.

as indicated in the question radial contains rad, also found in radius, so the fracture's would span the radius.