RVHS:

thesjarox:

[quote=\"vaidyanathan padmini\"]How about friction question from McQ.....

My dd's answer is only C as friction opposes motion...
Only the box in c is moving so it should have friction

Confirmed with teacher-A,B and C.
Friction also acts on stationary objects. That's why forces have to overcome the friction before being able to move the object. Also, if there were no friction acting on an object,the object would glide across the surface, like ice, and would never stop.
Thus, A is also correct.

The force of friction is always exerted in a direction that opposes movement or potential movement between the two surfaces,
For B: Potential movement
For Movement
For A: non
So answer should be: B &C[/quote]
I checked yahoo answers. Friction can act on stationary objects. The inertia of the mass at rest and the coefficient of friction between the two surfaces must be overcome.

Difficult! Now must endure 2 more days.

Fairly OK. Many people got tricked by question 29. They put 44 or 55 as the answer.

Hi to all ksp’s here. We all should know that in 2015 the psle syllabus for English is changing. Glove your opinion here.

orchid1109:

TF2010:

Received CO from HCI and congratz to all who have CO/WL

:congrats:

:thankyou:

Received CO from HCI and congratz to all who have CO/WL

Don’t worry, snails from HCI all competiting with tortoise.

tired mom:

Got it! Got it! Yay!!!


It's sent to my daughter's email account! I kept checking MY email account.... so silly!

:congrats:

If HCI has a tea session, we know what’s the buffet----- escargots and fried piegon

Have anyone see snails coming out of HCI yet? Poor snails have to travel island wide to give reject letters or offers