2. Sumin runs 50 meters from her house to the park down the street. She then keeps running in the same direction to her friend's house 150 meters from the park. She then turns around and goes back to the
park. What is Sumin's average velocity during her run if it takes her 2 minutes to complete?
a. 25 m/s
b. 2.92 m/s
C. 3.33 m/s
d. 0.417 m/s

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s