Question

2 cars are moving in same direction in parallel lanes along a highway. At some instant velocity of car A exceeds car A exceeds the velocity of car B. Does that mean that the acceleration of A is greater than car B? Explain.

~Well I would say yes but is it b/c of the equation relation relating v to a ?
(v/t=a) and thus if v goes up then a goes up as well?

Just checking my thoughts

Thanks =)

Answer 1

No. Wouldn't all the scene facts be true if Car A were Just going faster than B?

Answer 2

But they say "at some instant the velocity exceeds velocity of car B"...doesn't that mean that they were at a certain velocity before and after that instant something changed??

Wouldn't the car A have to accelerate to have the velocity increase??

Are you refering to speed?

Answer 3

Is this alright???

please help me out on this..=(

(above post explanation)

Answer 4

at some instant Car A is going faster than Car b.

That says nothing about the other times. It does not mean that Car A accelerated just before, or deaccelerated after. The question asks its meaning: Its meaning is not that car A accelerated.

Answer 5

Oh..Okay..Thanks Bob =)