Two cars travel on a straight road from point A to point B. Both cars accelerate to their maximum speed and then continue at that speed for the rest of the distance. Car 1 accelerates from rest to 20 m/s over 30 s. It reaches point B in 35 s. Car 2 accelerates from rest to 20 m/s over 20 s. It reaches point B in 30 s. Which car uses a larger acceleration to reach its maximum speed, and which car has a larger average speed?

A) Car 1 has both a larger acceleration and a larger average speed.

B) Car 2 has both a larger acceleration and a larger average speed.

C) Car 1 has a larger acceleration, but Car 2 has a larger average speed.

D) Car 2 has a larger acceleration, but Car 1 has a larger average speed.

Respuesta :

Answer:

B) Car 2 has both a larger acceleration and a larger average speed.

Explanation:

Car 2 reaches 20 m/s faster than Car 1, so it has a larger acceleration.  Car 2 also reaches point B faster than Car 1, so it has the higher average speed.

Car 2 uses a larger acceleration to reach its maximum speed and Car 2 has a larger average speed.

What is acceleration?

An acceleration is a rate at which velocity changes with time, in terms of both speed and direction.

What is average speed?

Average speed is defined as the total distance travelled by the body in total time.

  • Car 1 accelerates from rest to 20 m/s over 30 s. It reaches point B in 35 s.
  • Car 2 accelerates from rest to 20 m/s over 20 s. It reaches point B in 30 s.

Thus , from above mention facts we can say the the correct answer is option B which is "Car 2 has both a larger acceleration and a larger average speed."

Learn more about acceleration here- https://brainly.com/question/460763

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