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191 UNITED NATIONS MEMBER STATES
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∙ 15y ago
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What is the average force on a 75 kg crash test dummy that crashes into a wall at 25 m per s and is brought to rest in 1s?
Let's use a combination of two equations F= ma and v= u + at where F= Force; m= mass; a= acceleration; v = final velocity= 0 m/s; u= initial velocity=25 m/s and t= time. From the equation v= u + at, we can solve for a. So, a = (v-u)/ t. Using F= ma F= m((v- u)/t)) F= 75kg((0-25 m/s)/ ls) F= (75 x 25) kg m/s^2 F= 1875 kg m/s^2= 1875 N
For how long should a force of 100 N act on a body of 20 kg so that it acquires a velocity of 200 ms?
u= 0 m/s v= 200 m/s m= 20 kg F= 100 N F= (mv - mu)/t 100 = (20*200 - 20*0)/t 100 = 4000/t t= 4000/100 t= 40 s hope it helps cheers ^_^
How would you calculate acceleration?
Acceleration is defined as the change in velocity, divided by the time it takes to achieve this change. There are also some other formulas which you can use, depending on what you know about a specific situation.
What is the elastic potential energy of a compressed spring when k is 17.7 newtons per centimeter and x is 19.0 centimeters?
U=1/2kx^2 = (1/2)(17.7N/cm)(19.0cm)^2 = 3194.85 N*cm = 3.195 N*m = 3.20 Joules
What is the importance and history of science and technology?
history-so people do not make the same mistakes as done in the past science/tech.-to gain more info about the past or create things that provide infoscience and technology is NONE OF YOR B-U-S-I-N-E-S-S!!!!!!!!!!
How do you spell businessman?
B-u-s-i-n-e-s-s-m-a-n
How many words can you make with a e y o u g m n r s t?
Words you can make with a e y o u g m n r s t --ageamanareasatateeatgategeargogoesgonegoutguestgumgutgutsmanmanymatemaymenmoanmoneymoremorguemornmostmountmournmousemousymugmugsmustmustynastynearnestnetnutnutsnormrangratrayrestroastrougerouterugrumrungsagsatsayseatsetsoarsoresourstarstarestaystoragestorestormstormysureteateartearytoetonetonguetoretorntourtoytrimtrimstuneyeastyeomanyogurtyouyoungyouryoursa e y o u g m n r s t
How do you spell sewnami?
t s u n a m itsunami
What words do these letters spell m i s s l o u i s e m c n a u g h t?
Miss Louise McNaught
Can someone tell me what the best site is out there right now?
h t t p s : / / y a z i n g . c o m / d e a l s / b l u e h o s t / m a d i s o n a m u l l i n s
What is 'anonymous' when translated from English to Italian?
a-n-o-n-y-m-o-u-s
What word can be formed using the letters m s u n a?
Sunam
Do you spell numbers?
N - U - M - B - E - R - S.
Who is going to replace sunmi?
hye rim! :S is going to replace S U N M I!
What sentence can i make from m v e m j s u n p letters?
something
What words you can make from n r m o u s o?
Surmoon
What letter comes next in this letter sequence m v e m j s?
u n p
