Want real understanding (not just memorising formulas)?

I’ve seen a lot of students post tough Physics questions online and either:

• Get no response
• Get an answer with no explanation
• Get something overly complicated

Let’s work through it properly.

Challenge Question (Mechanics – Energy & Forces):

A particle of mass m is projected up a smooth incline with speed u.

It comes to rest after travelling a distance s.

Show that:

u² = 2gsinθ × s

Step-by-step thinking:

1. Forces acting along the slope:

   • Weight component = mg sinθ (down the slope)

2. Acceleration:

   • a = −g sinθ (negative because it slows down)

3. Use SUVAT:
   v² = u² + 2as
   At highest point: v = 0
   0 = u² + 2(−g sinθ)s
   ⇒ u² = 2gsinθ × s

Key insight:

This links forces → acceleration → motion equations

(not just plugging into formulas blindly)

If you’ve got a Physics question (mechanics, electricity, fields, etc.), post it below

I’ll break it down clearly so it actually makes sense.

We’ll also be doing live sessions where I solve exam questions and explain the full reasoning.

Let’s make this the place where difficult questions finally get answered