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

Answer: -0.8

HOPE IT HELPS :D

Answer 2

Answer: Her acceleration is -0.8 m/s²

Step-by-step explanation:

The initial velocity of Sandra ( u) = 10 m/s

The final velocity of Sandra ( v) = 2 m/s

Time taken by Sandra (t) = 10 s

Let the acceleration of Sandra be 'a'

Using the equation of kinematics, we have

v = u + at

⇒ 2 = 10 + 10a

⇒ -8 = 10a

⇒
`a = (-8)/(10)m/s^2`

⇒ a = -0.8 m/s²

Hence, her acceleration is -0.8 m/s².