The longest bicycle in the workld was built in New Zealand in 1988 it is more than 20 m in length, has a mass of 3.4 x 10² kg, and can be ridden by four people at a time. Supposed four people are riding the bike south-east when they realize that the street truns and that the bike won't make it around the corner. All four riders jump off the bike at the same time with the same velocity (9.0 km/h to the northwest, as measured relative to Earth.) The bicylce continues to travel forward with the velocity of 28 km/h to the southeast. If the combined mass of the riders is 2.5 x 10² kg, what is the velocity of the bicycle and riders immediately before the riders escape?
i think its asking for v(initial), right?
does the change of direction affect the conservation of momentum??
the formula is m1x v1 (initial) + m2 x v2 (initial) = m1x v1 (final) + m2 x v2 (final)
please sovle and explain a little
2007-12-11 18:09:18 · 2 answers · asked by Tara V 2 in Science & Mathematics ➔ Physics
You are on the right track.
If we take SE as + and NW as -
the initial momentum was
(3400+2500)*vi
is equal to the ending momentum
3400*28-2500*9
set equal and solve for vi (km/hr)
vi=12.32 km/hr SE
Momentum is always conserved. The bike speeds up since the riders jumped the opposite direction.
j
2007-12-14 05:45:56 · answer #1 · answered by odu83 7 · 0⤊ 0⤋
a million. they are domicile to small weevils that circulate and subsequently circulate their domicile. 2. Foolishness, different than that it is not as confusing because it seems. 3. seems obtrusive; you're no longer harm in falling, only in hitting some thing.
2016-11-26 00:01:15 · answer #2 · answered by ? 4 · 0⤊ 0⤋