Two cars are moving in the same direction in parallel lanes along a highway. at some instant, the instantaneous velocity of car a the instantaneous velocity of car b. does this mean that car a's acceleration is greater than car b's? explain and use examples.

No, it means car A is going faster than car B.

Instantaneous velocity means velocity at a given point in time and acceleration is the change of velocity in respect to time
 
If car A move at constant velocity of 30 m/s while car b move at constant velocity of 25 m/s, Car A's instantaneous velocity would be greater

hope this helps

Two cars are moving in the same direction in parallel lanes along a highway. At some instant, the instantaneous velocity of car A the instantaneous velocity of car B. Does this mean that car A's acceleration is greater than car B's?

No, it means car A is going faster than car B. For example, if car A is moving at a constant velocity of 30 m/s and car B is going at a constant velocity of 25 m/s, then the instantaneous velocity is greater.

I hope it helps, Regards.

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