00:01
In this question, you're asked to actually write the kinetic energy of some objects, right? one of this is a ladybird.
00:12
Let me just write a ladybird, ladyberg.
00:16
And another one is a bowling ball, right? and the third one is a car.
00:26
And for each object, for each body, actually, you have, of course, a mask, right? and the mass for the leadbrook is 134 mini -gram.
00:39
It has a velocity 2 .27 km per hour, right? and how about the bowlingboro? it has a mass which is 6 .35 kilogram and has a velocity to 23 .3 km per hour.
01:01
And a car weighing, what's that? a car weighing is not really showing well, i think, is about, i would say it's about 10 to 1 ,000 kilograms, suppose.
01:18
The question did not make it clear.
01:21
Moverset speed 33 .5 kilometers per hour.
01:29
And in the three situations, you can work at a kinetic energy, which is a connect energy.
01:34
An energy of an object, of course, is given by the mass times velocity squared divided by two, right? and for each of this, because you can get the answer.
01:43
So i will write e .k here, let's find it out.
01:47
So you just divided by two and times mass 30.
01:53
This is a million gram.
01:55
I would change it to a kilogram, and that would be 10 to minus six kilogram, right? and then kg times velocity squared, which is 4 .27 kilometers, i would get to meters.
02:14
So that's 10 to 3 meter per hour.
02:21
Hour is 3 ,600 seconds, and then i square this.
02:26
And we can work them out.
02:29
You're going to half times, you know, 34 times 10 to minus 6 times 4 .27 times the numbers, which 10 to 6 divided by 3 .6 squared times 10 to 6 actually.
02:57
And then you have the units, which is kg times meter per second squared.
03:03
And this is just one jaw, right? so the answer is roughly.
03:09
This is 17 and divided by 4 .27.
03:15
And this can set out.
03:18
And you have to divide also by 3 .6 squared and 10 to minus 6 and a jaw, right? this, i guess, it's a pretty small number.
03:29
I think it's roughly something like of the order...