Can you check my physics work?

Question

I cant get the math right can you give me thees calculations its form my science project and i just don't know enough physics to answer them. Im trying to convert the impact and pressure of giraffe force into humans force. So just shrink a giraffe to 195 pounds. I Just need the work checked. Is it right? I got the genital information from this site

http://colgatephys111.blogspot.com/2013/11/how-hard-does-giraffe-hit.html

Giraffe
Weight (pounds): 3500
Head weight (pounds): 100
Acceleration of neck (miles per hour/second): 75
Force(newtons): 1728
Speed(miles per hour): 25

Human sized giraffe
Weight of average man(pounds): 195-conversion percent- 5.5%
Weight of head (pounds): 5.5
Acceleration of neck (miles per hour/seconds): 38.2
Force (newtons): 98
Speed (miles per hour): 85.5

Answer 1

Yes Olivia 

You are doing it fine

Weight 3500 pounds seems to be fine

Acceleration of neck approx 75 miles / hr²

means rate of change of speed of neck is 75miles per hr² that every hour 75miles per hour is being added, which to me seems to be unreasonable . Its acceleration may be zero or very low

Force = Mass * acceleration 

         = 3500* acceleration ( pound weight  or pound force) 

You need to change pound force into Newton by proper conversion table

Which will be much more than 98 Newton

Speed miles per hour also seems to be unrealistic as it may be much lower than the speed of a car

 

Weight of head as 5 pound weight seems to be on the lower side if compared to the total weight

You shoud also know the difference between mass and weight as mass is in Kg or pound where as force is measured in Newton or pound weight or poundal

Little more practice will help you a lot