Question
Question 36:
(a) Define speed. What is the SI unit of speed?
(b) What is meant by (i) average speed, and (ii) uniform speed?
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Answer:
(a) Speed of a body is the distance travelled by it per unit time. The S.I. unit of speed is m/s.
(b) (i) Average speed of a body is the total distance travelled by it divided by the total time taken by it to cover the given distance.
(ii) A body has a uniform speed if it travels equal distance in equal intervals of time, no matter how small these time intervals are.
(b) (i) Average speed of a body is the total distance travelled by it divided by the total time taken by it to cover the given distance.
(ii) A body has a uniform speed if it travels equal distance in equal intervals of time, no matter how small these time intervals are.
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Question Text | Question 36:
(a) Define speed. What is the SI unit of speed? (b) What is meant by (i) average speed, and (ii) uniform speed? |
Updated On | Aug 29, 2022 |
Topic | Motion |
Subject | Science |
Class | Class 9 |
Answer Type | Text solution:1 Video solution: 1 |
Upvotes | 109 |
Avg. Video Duration | 13 min |