Recent content by Maxie

Sorry I have no idea why I was typing + instead of -. All along I was using minus. So i got the answer of 277.86m. Even though that's very far off the real value I guess that's what the teacher wants us to realize with the "Does this seem to be a realistic value?". I guess it is still a...

I'm confused as to what the right answer is now. SteamKing, can you show me how you would work out the question? If I use a minus sign in my calculator when calculating the distance of the bounce I get a syntax error? and i understand what you mean about having velocity as positive but its just...

I then have to calculate how high Philae is likely to have bounced. I used this formula: or delta Y = ut + 1/2at^2 and i got 277.86m The actual recorded value was around 1000m so do either of you think this was on purpose or am I incorrect?

I don't completely understand what you are trying to explain. I did u = v-at u = 0 - - (+) 5.2x10^-5 x 3300 u = 0.17 m/s (the 5.2x10^-5 is negative because its going up, similar to an object on Earth which would be -9.8m/s upwards and 9.8m/s downwards?) Sorry for not understanding the point you...

So does the time just get halved because I am only calculating till its about to start falling back to comet 67p. And the velocity of Philae at the highest point of travel would be 0 m/s wouldn't it because its about to start coming back ( doesn't that make the final velocity 0?) And the u...

So is this on the right track? u = v-at u = 0 + 5.2x10^-5 x 6600 u = 0.34m/s

I found acceleration using F=ma, F/m=a 5.2x10^-5 / 100 (weight of Philae=100kg) This equaled 0.00000052m/s^2 I then substituted into the formula u = v-at and got -0.003432 m/s This doesn't seem right as I should be getting close to 0.3m/s.

This question is on space and projectiles. It is about comet 67P/ Churyumov-Gerasimenko and the Rosetta/ Philae lander. Question: 67P has a gravitational field strength of 5.2x10^5 N/Kg. After Philae bounced it took 1 hour 50 minutes to reland. Calculate the initial velocity of Philae. Does this...