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Grade 9 Exam  >  Grade 9 Test  >  Physical Science for High School  >  Test: Motion and Measurement of Distances - Grade 9 MCQ

Motion and Measurement of Distances - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Motion and Measurement of Distances (10 Questions)

You can prepare effectively for Grade 9 Physical Science for High School with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Motion and Measurement of Distances". These 10 questions have been designed by the experts with the latest curriculum of Grade 9 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 15 minutes
  • - Number of Questions: 10

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Test: Motion and Measurement of Distances - Question 1
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How do we decide whether an object is in motion or at rest? 

Detailed Solution: Question 1

We decide whether an object is in motion or at rest based on -

  • If an object changes its position with time, it is in motion.
  • If an object does not change its position with time, it is at rest.

Hence, option C is correct.

Test: Motion and Measurement of Distances - Question 2
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Pooja had to find the area of a box. So to find the length and breadth she used a metre scale.But the scale she had was broken at the ends and the zero mark could not be seen. When she placed the metre scale, one end had 2 cm reading and the other end had 10.8 cm. 
What is the length measured?

Detailed Solution: Question 2

The length will be 8.8 cm.
If zero mark is not visible, you can use any other full mark on the scale and then subtract the reading of this mark from the reading at the other end.
10.8 - 2 = 8.8 cm

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Test: Motion and Measurement of Distances - Question 3
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James climb on the roof of a 7 story building and drops a stone from there. What kind of motion does the stone have?

Detailed Solution: Question 3

Stone Motion Analysis:


  • Rectilinear Motion: The stone dropped from the roof of a 7-story building will have rectilinear motion. This means that the stone will move along a straight line path as it falls towards the ground.

Test: Motion and Measurement of Distances - Question 4
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What is the smallest measurement unit of the length out of these?

Detailed Solution: Question 4

We know,
1 cm=0.01 m
1 mm=0.001 m
1 km=1000 m
Out of these, 1 mm is the smallest measurement unit of the length. 

Test: Motion and Measurement of Distances - Question 5
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When no force acts on a body, it must be .............

Detailed Solution: Question 5

When no force acts on a body, it can either be at rest or in uniform motion, according to Newton's First Law of Motion. This law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
Moving is not necessarily correct on its own because "moving" could imply that the object is accelerating or changing direction, which would require a force to be acting on it.

Test: Motion and Measurement of Distances - Question 6
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While measuring the length of a knitting needle with a ruler, the reading of the ruler at one end is 3.0cm and at the other end is 33.1cm. What is the length of the needle?

Detailed Solution: Question 6

Complete step-by-step answer:
Given data:
The reading of the ruler at one end = 3.0 cm
And the reading of the ruler at the other end = 33.1 cm
While measuring the length of the knitting needle with a ruler the actual reading of the knitting needle is the difference of the final reading and initial reading.
I.e. the difference of the reading of the ruler at the other end and the reading of the ruler at the one end.
So the actual reading of the knitting needle or the length of the needle = reading of the ruler at the other end – reading of the ruler at one end.
Now substitute the values we have,
So the actual reading of the knitting needle or the length of the needle = 33.1 cm – 3.0 cm = 30.1 cm.
So the length of the needle is 30.1 cm.
So this is the required answer.

Test: Motion and Measurement of Distances - Question 7
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What is the SI unit of length used by scientists all over the world for measurement?

Detailed Solution: Question 7

  • Scientists worldwide use the metre (m) as the standard unit of length for measuring things.
  • A metre is a little longer than a yardstick and is divided into smaller units like centimetres and millimetres.
  • So, when scientists want to measure how long something is, they use a metre to keep their measurements consistent with others around the world.

Test: Motion and Measurement of Distances - Question 8
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A rod measures 2.5 meters in length. If you need to convert this measurement into centimeters, what is the length of the rod in centimeters?

Detailed Solution: Question 8

To convert meters to centimeters, multiply by 100 (since 1 meter = 100 centimeters). Thus, 2.5 meters × 100 = 250 centimeters.

Test: Motion and Measurement of Distances - Question 9
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A piece of string is 0.75 meters long. If you need to measure this length in millimeters, how many millimeters long is the string?

Detailed Solution: Question 9

To convert meters to millimeters, multiply by 1000 (since 1 meter = 1000 millimeters). Thus, 0.75 meters × 1000 = 750 millimeters.

Test: Motion and Measurement of Distances - Question 10
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A car travels 120 kilometers in 2 hours. What is its average speed in meters per second (m/s)?

Detailed Solution: Question 10

To find the speed in meters per second, first convert kilometers to meters (120 km × 1000 = 120,000 meters). Then convert hours to seconds (2 hours × 3600 seconds = 7200 seconds). Average speed = Total distance / Total time = 120,000 meters / 7200 seconds ≈ 16.67 m/s.

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About this Grade 9 Practice Test

This test contains 10 MCQs on Motion and Measurement of Distances with detailed solutions for each question. It is part of the Physical Science for High School course on EduRev, designed to align with the current Grade 9 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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