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
It depends u have a chance of getting it
The maximum total fat intake as percentage of
energy intake is 30. Dietary fat is the fats that a person consumed in
every meal. Dietary fats also helps us to be healthy as long as we eat this fats
in moderation.
Answer:
you should not interupt or respond to anything in a condescending way
to demonstrate active listening nod your head to confirm you got the point when they pause add on to the conversation about their topic not changing the topic to talk about something else
Weight that is below the desirable body weight is under-weight :]
