(a) As the car is moving with constant velocity, it means the rate change of velocity does not change, therefore the average acceleration of the car is zero.
Thus, there is no acceleration, when velocity is constant.
(b) Average acceleration,
Here, v is final velocity and u is the initial velocity and 
is the time interval.
As twelve seconds later, the car is halfway around the track and traveling in the opposite direction with the same speed, therefore
Thus, the average acceleration of the car is 
in the direction to the left.
<span>If a mouse and an elephant both run with the same kinetic energy, can you say ... 3. if a car traveling at60 km/h will skid 20 m when its brakes lock, how far will it skid if it is traveling at 120 km/h when its brakes lock? (This question is typical on ...</span><span>just get this and figure it out and this is your answer </span>
Overloading
Explanation:
The reason reason why the mcb of rupa's room keeps tripping is due to the fact that excessive current has being supplied to his room.
MCB stands for a miniature circuit breaker.
A miniature circuit breaker opens up the electrical circuit by switching it off when there is overloading or faulty connections.
- A MCB helps to control the flow of current and it is designed to hand certain limits of electrical voltage.
- If the MCB keeps tripping, it suggests a surge in current supplied, overloading or probably a faulty connection.
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Circuit brainly.com/question/12472944
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B. Parabolic
This is because an object that is in projectile motion has gravity acting on it.
