Question

Sandra is riding a bicycle at 10.0 meters/second. She slows down to 2.0 meters/second in 10 seconds. Her acceleration is meters/second2.

Answer 1

Hii..

Answer:

Her acceleration is -0.8 m/s^2

Explanation:

Initial velocity of Sandra {u} = 10 m/s

Final velocity of Sandra {v} = 2 m/s

Time taken by her {t} = 10 seconds

acceleration {a} = ?

So ,

now using the first equation of motion ,

v = u + at

=> 2 = 10 + a × 10

=> 2 = 10 + 10 a

=> 2 - 10 = 10 a

=> - 8 = 10 a

=> a = - 8 / 10

=> a = - 0.8 m/s^2