A Physics problem :) anyone can answer :)?

Question

why is a jeepney of mass 2000kg more difficult to stop than a tricycle of mass 1000 kg when both are traveling at the same initial speed. its a practical question, but answer it scientifically (physics) :)

Answer 1

the jeepney is twice as heavy as the tricycle, why wouldnt it be twice as hard to stop?
and by the way, wtf is a jeepney? and who is on this tricycle, an elephant?

Answer 2

Actually it is depends on Momentum of the Body.

Momentum = Mass * Acceleration

Lets consider acceleration of both jeepney & tricycle is 'a'.
Then
Momentum of jeepney = 2000(kg) * a;
and
Momentum of tricycle = 1000(kg) * a;

From above two equations,
whose momentum will high will hard to stop.

Now got your answer.

Answer 3

Wow! If I had an genuine *coverage*, I'd be hazardous! Seriously, even though, I've form of wandered round a bit of in coverage-area, over the 12 months+ that I've been on right here. I appear for questions that curiosity me, and that I consider I can contribute towards the asker's expertise of. I am specially interested in questions that upload, "... do not simply supply me the reply, I desire to understand how to do it." That's 24-karat gold! But although the query appears to be simply watching for a rapid reply, no longer worrying approximately ways, I will nonetheless take a look at, if I reply, to impart anything of the procedure, and even generalize the answer, and upload, "with this system you must be in a position to manage any equivalent quandary you come upon." Perhaps within the wish that a minimum of a couple of of those askers will discover that a clutch of the correct procedures could make their lives less complicated than always posting the identical types of questions. And if the asker comes again with, 'do not comprehend that wholly, might you supply extra element?', I take the time to transmit a few expertise. I welcome such dialogs whilst they are able to truthfully have an influence. In the case of a couple of issues in a unmarried Y!A query, I wager like lots of you, that tends to place me off. But I uncover that after a query has strangely many components, they're mainly each and every extra like morsels or tidbits, so mostly I'll move by way of answering all of them, or so much of them, and comment, "Are you seeing a sample right here?" Finally, I usually supply a TD to an reply that simply says, "Do your possess @#$% homework." Anyone who's going to take that perspective, should not be posting in any respect. BTW, MD, are you going to percentage your coverage with us, maybe on the near of the reply interval? What are your possess ideas in this?

Answer 4

There is a law, called Newton's Second law of motion, which states that the rate of change of momentum is directly proportional to impressed force. Now momentum means the mass X velocity. To stop a moving object, you have to reduce its momentum to zero.
Let initial velocity is u and final velocity is v (=0) So initial momentum is mu and final momentum is mv. So change of momentum is (mv-mu). Therefore rate of change of momentum is (mv-mu)/t (t is time)
now, to stop we apply a force, say, P
so P is proportional to (mv-mu)/t. Since final velocity is zero, so mv = 0. So P is proportional to -mu/t
In your example, the velocities of jeepny and tricycle are same, only their m values are different. So to stop a heavier body, we have to apply greater amount of force.