Science Question (s) - 10 POINTS (physics)?

Question

I need some help figuring out these questions. My teacher just gave them without explaining them.

1. Kristin rode east along the bike path on her way to the mall. She stopped at the top of a slope before coasting down, accelerating constantly at 0.75 m/s^2 for 24 s. She then applied her brakes and slowed to 10 m/s in 5.0 s.

(a) What was Kristin's velocity after 24s?

(b) What was her acceleration while she braked?

(c) WHat was her displacement after 29s?

2. Raja is travelling south on his motorcycle at 60 km/h when he merges onto the freeway. He accelerates to 100 km/h [S] in 15 s.

(a) Convert Raja's initial and final velocities to m/s.

(b) Calculate Raja's acceleration.

(c) WHat was his displacement while accelerating?

Answer 1

I would work this out for you, but I dont think this would benifit you!

Instead check out this link:

http://www.bbc.co.uk/scotland/education/...

{Remember to check out ALL the pages)

If you still need help, you can email me

Answer 2

Do your homework, school boy! jk. im sorry i am not good at math. i mean science. i dont do good in school. sorry!