Learn dynamics MCQs, grade 9 online physics test 8, physics study guide multiple choice questions and answers. Physics study guide revision test has physics worksheets, helping answer key with choices as iscolated system, sexasigmal system, sgs system and none of above of multiple choice questions (MCQ) with physics study guide quiz as a group of interacting bodies on which no external force is acting is known as for competitive exam prep, viva interview questions. Free physics study guide to practice physics study guide quiz to attempt multiple choice questions based test.

MCQ. A group of interacting bodies on which no external force is acting is known as

1. sexasigmal system
2. iscolated system
3. SGS system
4. none of above

B

MCQ. When we walk or run, to push the ground backward we need

1. inertia
2. position
3. friction
4. velocity

C

MCQ. If the pressing force on the sliding surfaces is greater, then friction will be

1. small
2. constant
3. zero
4. greater

D

MCQ. A force of 15 N moves a body with an acceleration of 3 ms−2. Its mass is

1. 10 kg
2. 8 kg
3. 12 kg
4. 5 kg

D

MCQ. Law of inertia is also known as newton's

1. 1st law of motion
2. 2nd law of motion
3. 3rd law of motion
4. both A and B

A