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ICSE Class 9 Answered

tell me
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Asked by bishnoiladla | 06 Jul, 2020, 10:17: AM
answered-by-expert Expert Answer
a girl walks along a straight path to drop a letter in the letterbox and comes back to her initial position. 
 
 
F r o m space g r a p h comma space I n i t i a l space t h e space g i r l space s t a r t s space f r o m space r e s t T h u s comma space d i s p l a c e m e n t space equals space 0 space t i m e space equals space 0 space H e n c e space v e l c o i t y space i s space 0 W h e n space t i m e space t space equals space 50 space s space D i s p l a c e m e n t space equals space 100 space m space H e n c e comma space t h e space v e l o c i t y space a t space t h i s space i n s tan c e space i s comma space v space equals s divided by t space equals space 100 divided by 50 space equals space 2 space m divided by s space W h e n space t space equals space 100 s space d i s p l a c e m e n t space i s space z e r o space a s space t h e space g i r l space r e t u r n s space t o space h e r space i n i t i a l space p o s i t i o n. space T h u s space v e l o c i t y space a t space t h i s space i n s tan c e space i s space z e r o. space B a s e d space o n space t h i s space w e space c a n space d r a w space t h e space v e l o c i t y space minus space t i m e space g r a p h space a n d space i t s space i s space a s space f o l l o w s colon space minus space
 
Answered by Shiwani Sawant | 06 Jul, 2020, 09:41: PM

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ICSE 9 - Physics
How force is directly propotional to rate of change of momentum.
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ICSE 9 - Physics
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ICSE 9 - Physics
a cricket ball of mass 150 gram moving at a speed of 25 ms-¹ brought to rest by a player in 0.03 seconds . Find the average force applied by the player.
Asked by aarshareny07 | 25 Jul, 2021, 11:05: AM
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ICSE 9 - Physics
A weightlifter lifts a weight of 10 kg weight in 10 seconds. Calculate the change in the momentum of the weight (g = 9.8 ms
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ICSE 9 - Physics
State Newton's second law of motion.What information do you get from it?  
Asked by Bhasharaj | 06 Oct, 2020, 10:21: PM
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ICSE 9 - Physics
tell me
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Asked by bishnoiladla | 06 Jul, 2020, 10:17: AM
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ICSE 9 - Physics
Prove ;mathematically ,F=ma
Asked by vishwadiprathod0070.9sdatl | 12 Jun, 2020, 08:15: PM
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ICSE 9 - Physics
find the mass of a body which can be balanced by a force of 39.2 N.
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ICSE 9 - Physics
Derivation between - Newton's first law,second law and third law.  
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ICSE 9 - Physics
An empty truck and a loaded truck moving with the same velocity .on applying brakes which truck will stop first and why
Asked by geethamuralimg | 07 Feb, 2020, 08:21: AM
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