In CBSE Class 9 Science Chapter 9 – Force and Laws of Motion, students will study topics related to the laws of motion, inertia and mass, momentum, etc. Subject-matter experts have prepared these important questions to help students scoring well in exam. Solving these important questions of CBSE Class 9 Science after they complete the syllabus will help them to evaluate their preparation.
CBSE Class 9 Science Chapter 9 MCQs
1. An object of mass 2 kg is sliding with a constant velocity of 4 m/s on a friction less horizontal table. Calculate the force required to keep the object moving with the same velocity.
(a) 32 N
(b) 0 N
(c) 2 N
(d) 8 N
2. _______ is the unit of measuring the momentum of a moving body.
(a) m/s
(b) kg.m/s
(c) kg.m/s2
(d) N m2/kg2
3. What does the inertia of a moving object depend on?
(a) Speed of the object
(b) Momentum of the object
(c) Shape of the object
(d) Mass of the object