M Karim Physics Numerical Book Solution Class 11 May 2026

“I was stuck on Chapter 8 (Centre of Mass) for two weeks. This solution book showed me how to choose the correct reference frame. Finally understood the concept.”
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Question (Class 11 – Kinematics):

A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate (a) the maximum height reached (b) the time taken to return to the thrower. “I was stuck on Chapter 8 (Centre of Mass) for two weeks

Solution (from M Karim manual):

Step 1: Data Collection

Step 2: Formula for Height Using ( v^2 = u^2 + 2as ): ( 0 = (49)^2 + 2(-9.8)(s) ) ( 19.6s = 2401 ) ( s = \frac240119.6 = 122.5 ) meters. “As a physics teacher, I use this to

Step 3: Formula for Time of Flight ( T = \frac2ug = \frac2 \times 499.8 = 10 ) seconds.

Final Answer: Max Height = 122.5 m; Time of flight = 10 s.

A: Yes, for numericals. However, for theory (definitions, derivations), you must also read the NCERT textbook. M Karim supplements NCERT; it does not replace it.

Before each chapter’s solutions, a compact 1‑page formula reference appears – perfect for last‑minute revision.

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