Question

10. At point A, a runner is jogging 5 m/s. Forty seconds later, at point B

Answer 1

Answer:

Deceleration of 0.075m/s²

Explanation:

Given parameters:

Initial velocity  = 5m/s

Time  = 40s

Final velocity  = 2m/s

Unknown:

The jogger's acceleration  = ?

Solution:

To solve this problem, we use;

         a  = $\frac{v - u}{t}$  

a is the acceleration

v is the final velocity

u is the initial velocity

t is the time taken

      a  = $\frac{2 - 5}{40}$   = - 0.075m/s²