The force is 1.5N acting downward or -1.5N.
Why?
To answer this question, we need to remember the Newton's Third Law. This Law states that for every force applied upon an object, there is an equal force acting in the opposite direction. This Law is also called "action-reaction Law".
So, if the force of the players heads applied on the ball is equal to 1.5N (upward), the force applied by the force on the players heads will be exactly equal, but with opposite direction, or -1.5N (downward).
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<h2>
Velocity of 0.2 kg ball is 0.17 m/s</h2>
Explanation:
Let the mass of balls be m and M.
Initial velocity ball 1 be u₁, ball 2 be u₂
Final velocity ball 1 be v₁, ball 2 be v₂
Initial momentum = m x u₁ + M x u₂ = 0.2 x 0.3 + 0.1 x 0.1 = 0.07 kgm/s
Final momentum = m x v₁ + M x v₂ = 0.2 x v₁ + 0.1 x 0.36 = 0.2v₁ + 0.036
We have momentum conservation
Initial momentum = Final momentum
0.07 = 0.2v₁ + 0.036
v₁ = 0.17 m/s
Velocity of 0.2 kg ball is 0.17 m/s
The one word that fills all blanks is nothing.
1. Nothing is sweeter than honey.
2. Nothing is hotter than sun.
3. A king wants nothing.
4. A beggar has nothing.
5. If you eat nothing, you will die.
The expanded-function dental assistant (EFDA) can play a
major role in the fabrication and temporary cementation of a provisional crown
or bridge. It is the dentist’s and the EFDA’s responsibility to remain current
with the new provisional materials and techniques that are available. It is
essential that a provisional crown or bridge remain cemented while the fixed
prosthesis is being prepared and delivered to the dental office. When the
patient returns for final cementation of a fixed crown or bridge, the
provisional should be cautiously removed without causing any fracture or harm,
just in case it will need to be recemented if the final prostheses needs to be
sent back to the lab for adjustments and remake.
Answer:
The Mercalli Intensity Scale measures the intensity of an earthquake by observing its effect on people, the environment and the earth’s surface. The Richter Scale measures the energy released by an earthquake using a seismograph. A base-10 logarithmic scale is obtained by calculating the logarithm of the amplitude of waves recorded by the seismograph.
Explanation: