Let v⃗ a be the velocity of the car at point a. what can you say about the acceleration of the car at that point?

Answer and Explanation:

Let the velocity of the car at a point is A is v

We have to tell about the acceleration at that point

Acceleration at that point will be perpendicular to the velocity and directed inside of the track

We can tell anything about the magnitude of the acceleration as magnitude of acceleration is the rate of change of velocity and here we have no information about time

that the claims meet official rules.

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electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j