Recent content by FAJAS

so is the answer to the second question correct ? :P

i got 250N too but the velocity was root 100 so it could be either negative or positive 10 but i just used 10 not the negative 10. I never thought of that about what's falling and stuff like that i just know that the acceleration would be positive if we go upwards and negative if we go downwards...

i got 62609.90N for the second question and 250N for the third. Yes i I am using 10m/s/s as the acceleration.

i used this formula(the one you had in the previous post) now and got 62609.90N Am i on the right track or still mssing up something? (i always write down all my steps but I am not used to typing them out ) I have more questions if you could help?!

so the answer is 250N ?

*For the first question i used the impulse equation and momentum equations (a) p=mv 80x25 = 2000kg/m.s (b) FT=m(v-u) =80(0-25)/0.005 = -400000N *For the second question i used the velocity/displacement equation to find out the velocity then i used the impulse...

Help me please! Homework Statement Q1.A person of mass 80kg is traveling in a car with a velocity of 25m.s the car is involved in a head on collision and brought rapidly to a halt. Neglecting frictional forces effects. Calculate (a) a person momentum just prior to impact (b) the resulting...