# Recent content by jackanese

1. ### Im really stuck on this basic formula

multiply P and C to find Z
2. ### Velocity and acceleration of a turtle

8m i think first find the velocity at teh fecne post (u = 2a/s - v) then find the acceleration, which is constant for the entire trip, then it's a matter of using the info to find the total distance traveled and minus that from 10.
3. ### Projectile motion

ok so i just ran a few calculations and i came out with a number... not sure if it is correct because my knowledge of physics is pretty limited... well first i better explain the experiment i am doing (well yeah i guess it is homework and sorry to the mods for putting it in the section but it...

ok will do
5. ### Projectile motion

im sorry i am not following newtons second law is basically impulse.... which is (delta) momentum / time but i don't have time or velocity... can you please clarify... your help is much appreciated
6. ### Projectile motion

is it possible to find the initial velocity of a projectile if you only know the Force applied (47N) to the projectile and the mass (0.04kg) of the projectile (assuming air resistance is negligible).. oh and the angle it was fired at was 30 degrees.. thanks in advance
7. ### Finding spring constant

ok thanks for that i might use that formula and match it against the figure i found..
8. ### Finding spring constant

never mind i already found a different solution
9. ### Act against Gravitational Force

you need a force that is equal to (or greater if u want it to go up) 9.8 x 'mass of object', which is opposing the force of gravity... up. assuming there is no other forces.
10. ### Finding spring constant

what would be the best way of finding the constant of a compression spring... the only way i can think of is by placing a known force, which will probably putting like 1kg of weight (9.8N) on the spring and measuring the displacement, the only problem with this is that the spring may bend and it...