a cannon of mass 400kg fires a shell of mass 20kg. if the shell leaves the cannon at 300ms^-1, with what velocity does the cannon recoil?
an a- particle is emitted from a polonium nucleus at a speed of 1.8 x 10^7 ms^-1. the relative masses of the a- particle and the remaining part are 4.002 and 212.0. calculate the recoil speed of the nucleus.
a space satellite has total mass 500kg. a portion of mass 20kg is ejected at a velocity of 10ms^-1. calculate the recoil velocity of the remaining portion (ignoring the initial velocity of the satellite).
two air gliders are at rest with a spring compressed between them. when released, one glider moves away with a speed of 0.32ms^-1 and the other moves ik the opposite direction with a speed of 0.45ms^-1. if the first glider has a mass of 0.4kg, what is the mass of the other?
in an explosion the exploding object breaks up into two parts, A and B. A has three times the mass of B. the speed of A after the explosion is 20ms^-1. calculate the speed of B.
what I got
1. 40v
2. 45.0
3. 35ms
4. 0.6
5. 6.5
honestly,
( Thankfully I got different backup answers on this piece of paper I have )
It was hard to understand my teacher because he can mumble sometimes
1 answer