# Physics

posted by .

A jogger starting morning run accelerates from a stand still to their jogging pace of 8km/hr. They reach a speed of 8km/hr 5 seconds after starting. How long does it take the jogger to reach the end of their 20m driveway?

• Physics -

V = 8km/h = 8000m/3600s = 2.22m/s.

0.5a = (V-Vo)/t = (2.22-0)/5 = 0.444 m/s^2

d = 0.5a*t^2 = 20 m.
0.222*t^2 = 20
t^2 = 90.1
t = 9.49 s.

## Similar Questions

1. ### Physics

Sorry for rewording it wrong. After 35 minutes of jogging, at the 9-km point in a total 10-km race, jogger A is behind the leader and moving at the same speed. What would have to be Jogger A's accelearation in order to catch up to …
2. ### science

a jogging path is 400 meters long. a jogger travels the entire length in 90 seconds.what is the speedof the jogger?
3. ### Math

We are studying pythagorean Theorem. How do I set this up to solve?
4. ### Physics

A jogger is running around a circular track of circumference 480 m. If the jogger has a speed of 11 km/h, what is the magnitude of the centripetal acceleration of the jogger?
5. ### physics

A jogger accelerates from rest to 5.78 m/s in 3.51 s. A car accelerates from 19.7 to 32.1 m/s also in 3.51 s. (a) Find the magnitude of the acceleration of the jogger. (b) Determine the magnitude of the acceleration of the car. (c) …
6. ### Algebra

Two joggers are running around an oval track in opposite directions. One jogger runs around the track in 56 seconds. They meet every 24 seconds. How many seconds does it take the second jogger to run around the track?
7. ### Algebra

Two joggers are running around an oval track in opposite directions. One jogger runs around the track in 56 seconds. They meet every 24 seconds. How many seconds does it take the second jogger to run around the track?
8. ### physics

A jogger accelerates from rest to 5.64 m/s in 3.36 s. A car accelerates from 24.6 to 39.8 m/s also in 3.36 s. (a) Find the magnitude of the acceleration of the jogger. (b) Determine the magnitude of the acceleration of the car. (c) …
9. ### physics

A jogger is running around a circular track of circumference 340 m. If the jogger has a speed of 11 km/h, what is the magnitude of the centripetal acceleration of the jogger?
10. ### physics

1.8 A jogger takes the following route to the entrance of their local park: north 45 m, west 60 m, south 75 m, and ﬁnally west 50 m. It takes them 7 minutes 26 seconds to reach the park entrance. (b) What is the average speed …

More Similar Questions