I'm stuck with number 2 and doubt my answers from number 1. Pls, I need help for both problems. It would be likely appreciated if you give me answers with solutions.
Share
I'm stuck with number 2 and doubt my answers from number 1. Pls, I need help for both problems. It would be likely appreciated if you give me answers with solutions.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Verified answer
Answer:
1. (a) The average speed of Jeiel who runs to the store 4 km away in 30 minutes is 8 km/h.
Solution:
To find the average speed, we can use the formula:
average speed = distance / time
Plugging in the given values, we get:
average speed = 4 km / (30 minutes / 60 minutes per hour)
average speed = 4 km / 0.5 hours
average speed = 8 km/h
Therefore, the average speed of Jeiel is 8 km/h.
(b) If Jeiel maintains this average speed for 1 hour, she will run a distance of 8 km.
Solution:
We know that the average speed is 8 km/h. Therefore, in 1 hour (i.e. 60 minutes), Jeiel will run:
distance = average speed x time
distance = 8 km/h x 1 hour
distance = 8 km
Therefore, Jeiel will run a distance of 8 km if she maintains her average speed for 1 hour.
2. The height of the building is 490 meters.
Solution:
We can use the formula:
distance = 1/2 x acceleration x time^2
where acceleration due to gravity, g = 9.8 m/s^2
Plugging in the given values, we get:
distance = 1/2 x 9.8 m/s^2 x (10 s)^2
distance = 1/2 x 9.8 m/s^2 x 100 s^2
distance = 490 m
Therefore, the height of the building is 490 meters.
hope that helps somehow:)