The baseball of mass 140g travels at a speed of 30 m/s.
Its momentum is
P₁ = (140 x 10⁻³ kg)*(30 m/s) = 4.2 (kg-m)/s
Part a.
The momentum is dissipated in 1.5 s.
The average force, F, that dissipates the momentum is
(F N)*(1.5 x 10⁻³ s) = 4.2 (kg-m)/s
F = 2800 N = 2.8 kN
Answer: 2.8 kN
Part b.
The average force that the baseball exerts on the head is 2.8 kN, as obtained in part a.
This is true if the time to dissipate the momentum is 1.5 ms.
Answer: 2.8 kN
Part c.
Answer:
(a) The forehead will not fracture because 2.8 kN < 6.0 kN.
(b) Your cheek will fracture because 2.8 kN > 1.3 kN
Answer:
I think it's supplied with water at least 150 degrees F
Answer:
Coordination is the ability to jointly and efficiently move different parts of the body, while agility can be defined as the ability to quickly change the direction and position.
Explanation:
In soccer, coordination-related skills enable the rapid learning of movements to execute a pass, to kick the soccer ball in free kicks, to kick the ball in free kicks, etc. Moreover, eye-foot coordination is also critical for intercepting the ball and anticipate the opponent's movements. On the other hand, the agility enables the soccer player to make rapid changes in the direction of the body but without losing the balance, thereby maintaining a fluid movement that is critical to gain a competitive advantage in soccer.
Answer: The first step is to step back and ask yourself why you may be reacting.
Explanation: By stepping back and assessing the situation, you may receive insight on why you are acting a certain way. Take a few deep breaths, reflect, and do not hesitate to make a decsion.
