Okay obviously they've indicated that the truck is moving at 20 meters per second towards the left, the car is moving at 20 meters per second towards the right. Very much important ladies and gentlemen, obviously guys the car has got its own mass, the truck has got its own mass. Very much important ladies and gentlemen, so now what is the mass of the car?
It's 1m okay so that means it's just m kilograms. So that m ladies and gentlemen is the mass of that car in terms of m okay, do not be confused if you're not given the exact value of the mass. Okay so the mass of the track ladies and gentlemen is 2m kilograms very much important guys it’s very much important that you fully understand the information that you're given.
So in simple terms, what does it mean? So it means you know the truck has got double the mass of the car okay, so that means you know the truck is two times as heavy or is two times heavier than the car. But you do not need to worry that much about this being two times the mass of the car, you just need to know or bear in mind that the mass is just m for the car and the mass is just 2m for the truck.
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