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CBSE Class 9 Answered

What is mean by velocity  
Asked by rnarke6 | 22 Jun, 2019, 03:28: PM
answered-by-expert Expert Answer
It is one of the parameter used to describe the motion of a body.It refers the rate at which body changes its position. It is a vector quantity and SI unit is meter per second.
Answered by Utkarsh Lokhande | 22 Jun, 2019, 03:49: PM

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CBSE 9 - Physics
The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify.
Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:50: PM
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CBSE 9 - Physics
  Arrange the following speeds in increasing order(keeping the least speed first): (i) An athlete running with a speed of 10m/s. (ii) An bicycle moving with a speed of 200m/min. (iii) An scooter moving with a speed of 30km/h
Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:10: PM
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CBSE 9 - Physics
if u is an initial velocity v is final velocity of body and t is time taken by boddy to attain a velocity from u to v then find the value of acceleration A
Asked by Anushkamishra385123 | 14 May, 2023, 12:39: PM
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CBSE 9 - Physics
An object starts from rest and travels 20m in first 2 s and 160 m in 4 s . Find its velocity 7 s after the start .
Asked by asyadav1230 | 20 Dec, 2022, 07:17: AM
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CBSE 9 - Physics
Two points A and B are located on the floor of a room 30cm and 20cm away from a wall. The distance between the points parallel to the wall is 50cm. An insect is at moving on the floor at 5cm/s. It has to first reach a point C on the wall and then reach B such that AC and BC make equal angles with Normal to the wall at C. The time taken for this  motion will be
Asked by rajesh kumar | 21 Oct, 2022, 08:15: PM
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CBSE 9 - Physics
A student starts with a velocity 40 km/hr for school at 4 km away from his house. Due to closing of school he returns soon to his house with a velocity of 60km/hr.His average velocity will be.
Asked by manognabandla2004 | 08 Sep, 2022, 07:55: PM
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CBSE 9 - Physics
a body goes from a to b with a velocity of 20ms and come back from b to a the average velocity of 30ms the average velocity of the body during the whole journey is
Asked by ayushyadav70303 | 12 Jul, 2022, 07:32: AM
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CBSE 9 - Physics
what is vector quantities
Asked by drnaimansari2222 | 11 Jun, 2022, 04:28: PM
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CBSE 9 - Physics
ar Covers 50km in 15 mins and then covers 65km in next 15 mins. calculate it's average speed​
Asked by suzanesharma307 | 30 May, 2022, 11:03: PM
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CBSE 9 - Physics
a car is moving with the acceleration 2m/s from rest find the distance traveled by the car in 10th second
Asked by syedmehdiali543 | 17 Apr, 2022, 04:01: PM
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