Question

MARKING BRAINLIEST

sports car accelerates from rest to 26.8 m/s (roughly 60 mi/h) in 5.1 seconds. What is the acceleration of the car?

One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s. What was the average acceleration of the rocket during that initial minute?

Answer 1

Answer:

5.3m/$s^{2}$; 7.45m/$s^{2}$

Explanation:

the magnitude of a=(change in speed)/(the time took to accelerate to the speed above)

So for that sports car, a=(26.8m/s-0m/s)/(5.1s)=5.2549m/$s^{2}$, knowing from the question that the sig fig of this question depend on "5.1 seconds", so the answer should be 5.3 m/$s^{2}$

For the rocket, a=(447m/s-0m/s)/(1 minute)=(447m/s)/(60s)=7.45m/$s^{2}$