Equations of Motion | Motion | NCERT In-text Questions | Class 9 | PHYSICS | SHIKHAR 2024

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BYJU'S -  Class 9 & 10

BYJU'S - Class 9 & 10

Күн бұрын

Пікірлер: 52
@prajnyaparamitamallick2137
@prajnyaparamitamallick2137 Жыл бұрын
Thank you sir for the session😊 Home work question- 1 Through 2euation of motion distance will be =s=0+1/2 x 4 x 100 =200m Hw question-2 Through 3 equation of motion =2 x 10 x 20 =v*2 - 0 *2 =v*2=400 =v=20m/s (b) Hw question -3 Through 1 equation of motion =t=0-5/-10=0.5sec Through 2 equation of motion =s=2.5+1/2 x -10 x 0.25 =s=1.25m Hence, time taken =0.5sec and distance travelled =1.25m
@T_GungunTagore
@T_GungunTagore Жыл бұрын
Homework Answers :- 1) velocity of the car will be zero , acceleration=4m/s² and time taken is 10sec By using second equation (s)=0+1/2×4×(10)²= 400/2 =200 Hence , the distance covered by the racing car after 10s from start is 200m. 2)1) by using v² = u²+2as Final velocity of the ball just before it strikes the ground will be (v)=20ms-¹ (Option B) 3) velocity is zero and acceleration =10ms-² in the opposite direction of the stone = -10ms-² By third equation (s) =(0² - 5²)/2(10) = Distance (s)= 1.25 m Time = by using v= u +at ( 0=5 -10×t ), t=0.5s Hence ,stone reaches a maximum height of 1.25m in a timeframe of 0.5seconds
@astha--
@astha-- Жыл бұрын
Nice explanation sir😃 you made our concepts clear:) 🔴 Homework- 1) question:- 55:00 Answer- the car will cover 200m after 10 seconds (by 2nd eq.) 2) question:- 55:03 Answer- (b)20m/s (by 3rd eq.) 3) question:-55:16 Answer- (a) the height attained by the stone is 1.25 metre (b) stone will take 0.5 s or 1/2 s to reach there
@delhiaryan
@delhiaryan 9 ай бұрын
Same answer
@subhashridash9018
@subhashridash9018 Жыл бұрын
No words for this amazing session. ☺ Thanks a lot sir.😇 📖HW: 1) a= 4m/s², t= 10s, u= 0m/s, s=? Using 2nd equation of motion 🚌 s= ut+ 1/2at² =>s= 0+ 1/2*4*10*10 s=200m 2) s=h=20m, u=0, a=g=10m/s², v=? Using 3rd equation of motion v²=u²+2as =>v= √(0+2*10*20) v=20m/s 3) u= 0m/s, a= 10m/s², v=5m/s, s=?, t=? Using 3rd equation of motion for s v²=u²+2as =>s= (5*5)/(2*10) s= 1.25m Using 1st equation of motion for t t= (v-u)/a =>(5-0)/10 t= 0.5s
@sitaram2035
@sitaram2035 Жыл бұрын
Good explain
@rajeshwarimalusare3511
@rajeshwarimalusare3511 Жыл бұрын
Thank You Sir ... For this amazing session.. Homework.. 1. The car will cover 200 m after 10 sec. 2. 20m/s 3.A. the height attended by stone is 1.25 m B.The stone will take 0.5 s. To reach there .. 😊😊
@T_GungunTagore
@T_GungunTagore Жыл бұрын
Thanks a lot for this session 😃😃
@hydrochloric_x_acid0072
@hydrochloric_x_acid0072 Жыл бұрын
Yes really❤
@jhimun09
@jhimun09 Жыл бұрын
Ah! I was waiting for this.. loved the session ❤
@BeatLearning726
@BeatLearning726 Жыл бұрын
Thank you sir for this wonderful session... I have a doubt in here.... 23:40... You said m/s multiplied by sec = displacement.... But it should be acceleration....m/s²
@verostudies9171
@verostudies9171 3 ай бұрын
nono m/s multiplied by 1/s is acceleration, but m/s x s/1 is displacement as second at the bottom and at the top cancel out..
@Saloni-qm2jh
@Saloni-qm2jh Жыл бұрын
Sir🔴doubt🔴 - is non -uniform motion is acceleration .if yes why and if no why?
@Namann_03
@Namann_03 Жыл бұрын
Hey sir it was an amazing session with you. Just loved the session but I was having some doubts they are:- 1. Under what condition, the average speed is equal to the magnitude of the average velocity. Justify this. 2.Can a body have constant speed and still can be accelerated? Explain through an example.
@astha--
@astha-- Жыл бұрын
🔴Doubt🔴- we have to assume (upward and downward) both acceleration during free fall as negative or only one?? If one then which?🤔🤔
@sitaram2035
@sitaram2035 Жыл бұрын
Straight
@greeshma_priya
@greeshma_priya Жыл бұрын
Question = A boy leaves his house at 9.30 a.m. for his school. The school is 2 km away and classes start at 10.00 a.m. If he walks at a speed of 3 km/h for the first kilometer, at what speed should he walk the second kilometer to reach just in time?
@Avni-447
@Avni-447 Жыл бұрын
Loved the session!❤❤❤But I have a doubt sir. When the SI unit of acceleration is m/s^-2 then why do we write it as m/s^2 when solving questions? Homework Question Answers: (1) The racing car will cover 200m after 10s from start (2) The final velocity would be 20m/s (3) The height attained would be 1.25m and time taken to reach there will be 0.5s
@krishnapsnair5575
@krishnapsnair5575 Ай бұрын
@Avni-447 the SI unit od acceleration is m/s^2, i guess the - in that was something else
@Avni-447
@Avni-447 Ай бұрын
@@krishnapsnair5575 alrr thank you!
@tanush5885
@tanush5885 Жыл бұрын
Q5 the max height is 1.25m we can calculate it by 3rd equation of motion,the time taken is 0.5 we can calculate it by 1st equation of motion Q4 The distance travelled by the car is 200m we can calculate it by 2nd equation of motion. Mcq:20m/s we can calculate it by 3rd equation of motion.
@shruthir8203
@shruthir8203 Жыл бұрын
Why do we take point A not from origin but after few intervals in y-axis?
@smartygamerz_5455
@smartygamerz_5455 5 ай бұрын
38:8 sir isme m/s ka square nahi hoga kya ?
@pradeepkushwah5073
@pradeepkushwah5073 Жыл бұрын
Thanks a million Sir😃 My all doubts are become crystal clear✨✨
@yugkumarsethy7198
@yugkumarsethy7198 Жыл бұрын
Sir please tell easy tricks for derived equation of motion from graph
@narmadasamal3183
@narmadasamal3183 Жыл бұрын
sir is it compulsory to convert the final answer to standard unit
@MonikaKaushik-nn3rs
@MonikaKaushik-nn3rs 6 ай бұрын
Thankyou so much sirrr
@tanush5885
@tanush5885 Жыл бұрын
Doubt sir what is speed acquired?
@shreewaligupta6490
@shreewaligupta6490 Жыл бұрын
Tanush Speed acquired meaning is the speed covered in the given time with a certain acceleration
@shilpaks6509
@shilpaks6509 3 ай бұрын
I have a doubt
@abelmundakakulath9555
@abelmundakakulath9555 Жыл бұрын
the fact that saurav sirs name was not there in any of the comments in the beginning of the vedio
@AmishaVerma-mh2kq
@AmishaVerma-mh2kq Жыл бұрын
Sir what is difference between acceleration and velocity 🙏🙏
@JoannaDsouza-h2p
@JoannaDsouza-h2p Жыл бұрын
Acceleration (a) defined as rate of change of velocity (b) equation: a= initial velocity- final velocity ÷ time (c) SI unit = m/s²
@JoannaDsouza-h2p
@JoannaDsouza-h2p Жыл бұрын
Velocity (a) defined as distance by time taken with direction (b) equation : v= distance by time (c) SI unit : m/s
@gloryr2622
@gloryr2622 Жыл бұрын
What is parameter
@Muslim__960
@Muslim__960 2 ай бұрын
Sir g please start class 11
@sitaram2035
@sitaram2035 Жыл бұрын
Constant
@aiubahmed4113
@aiubahmed4113 Жыл бұрын
Indian toppers attendance here
@stationary2255
@stationary2255 Жыл бұрын
Present
@srimeeraenterprises1934
@srimeeraenterprises1934 5 ай бұрын
Present
@veenaveena5293
@veenaveena5293 Ай бұрын
Present
@shilpaks6509
@shilpaks6509 3 ай бұрын
can you help mee😢
@mrkv-6792
@mrkv-6792 10 күн бұрын
present
@saketmodi4427
@saketmodi4427 3 ай бұрын
620 m/s hoga
@sundarisandhya9533
@sundarisandhya9533 3 ай бұрын
Ok
@sundarisandhya9533
@sundarisandhya9533 3 ай бұрын
S how can you explain again
@sundarisandhya9533
@sundarisandhya9533 3 ай бұрын
B
@sitaram2035
@sitaram2035 Жыл бұрын
V-u/t
@sundarisandhya9533
@sundarisandhya9533 3 ай бұрын
A
@shilpaks6509
@shilpaks6509 3 ай бұрын
hi
@sayyadamaan1026
@sayyadamaan1026 11 ай бұрын
Parameters😮😢
@Chiteshsai7.
@Chiteshsai7. Жыл бұрын
hi
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