hi, this is part one of a momentum question. here they don't ask to calculate the speed but I don't know how to get the answers, can someone work this out for me and talk me through it pls. thanks
hey, thanks for the reply, but where did you get the number 6 from ?
If you look at the scale they give you, there is a footstep about every section. 2 sections is 10m, so if you look you can see that there is a gap between the steps of around 6 metres
If you look at the scale they give you, there is a footstep about every section. 2 sections is 10m, so if you look you can see that there is a gap between the steps of around 6 metres
ahh! I see. thank you. I thought that the question was talking about every single foot step on the picture
Just use p=mv for the first question, since you're given both mass and velocity.
Momentum must be conserved, so initial momentum = final momentum You can do: (m1 x v1) + (m2 x v2) = (m1 + m2) x v since the final mass will be combined.
You can just use F=ma for the last one. Acceleration= (Change in velocity) / time, both of which you're given as well as the mass. Sub in the values and you should have your answer.