मराठी

A Tennis Ball and a Cricket Ball , Both Are Stationary. to Start Motion in Them . - Physics

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प्रश्न

A tennis ball and a cricket ball , both are stationary. To start motion in them .

पर्याय

  • a less force is required for the cricket ball than for the tennis ball .

  • a less force is required for the tennis ball than for the cricket ball 

  • same force is required for both the balls .

  • nothing can be said .

MCQ

उत्तर

Less force is required for the tennis ball than for the cricket ball.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Laws of Motion - Exercise 3 (B) [पृष्ठ ६४]

APPEARS IN

सेलिना Concise Physics [English] Class 9 ICSE
पाठ 3 Laws of Motion
Exercise 3 (B) | Q 2 | पृष्ठ ६४

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A constant retarding force of 50 N is applied to a body of mass 20 kg moving initially with a speed of 15 ms–1. How long does the body take to stop?


A stone of mass tied to the end of a string revolves in a vertical circle of radius R. The net forces at the lowest and highest points of the circle directed vertically downwards are: [Choose the correct alternative]

  Lowest Point Highest Point
a) mg – T1 mg + T2
b) mg + T1 mg – T2
c) `mg + T1 –(m_v_1^2)/R` mg – T2 + (`mv_1^2`)/R
d) `mg – T1 – (mv)/R` mg + T2 + (mv_1^2)/R

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  1. Find the acceleration of the mass M.
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What do you understand by the term momentum?


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