ᴀɴsᴡᴇʀ ᴛʜᴇ ғᴏʟʟᴏᴡɪɴɢ ǫᴜᴇsᴛɪᴏɴ ғʀᴏᴍ ᴛʜᴇ ᴅɪᴀɢʀᴀᴍ ᴀʙᴏᴠᴇ ;
1) ʜᴏᴡ ᴍᴜᴄʜ ɪs 'ʙ' ᴀʜᴇᴀᴅ ᴏғ 'ᴀ' ᴡʜᴇɴ ᴛʜᴇ ᴍᴏᴛɪᴏɴ sᴛᴀʀᴛ.
2) ᴡʜᴀᴛ ɪs ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ 'ʙ'.
3) ᴡʜᴇɴ ᴀɴᴅ ᴡʜᴇʀᴇ ᴡɪʟʟ 'ᴀ' ᴄᴀᴛᴄʜ 'ʙ'.
4) ᴡʜᴀᴛ ɪs ᴛʜᴇ ᴅɪғғᴇʀᴇɴᴄᴇ ʙᴇᴛᴡᴇᴇɴ sᴘᴇᴇᴅ ᴏғ 'ᴀ' ᴀɴᴅ 'ʙ'.
5) ɪs ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ʙᴏᴛʜ ᴛʜᴇ ᴛʀᴀɪɴ ᴜɴɪғᴏʀᴍ ᴏʀ ɴᴏɴ - ᴜɴɪғᴏʀᴍ? ᴊᴜsᴛɪғʏ ʏᴏᴜʀ ᴀɴsᴡᴇʀ.
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RJRishabh:
hey dear the difference b/w speeds of objects A&B has been asked at which instance ??
i have no idea..this question is from sample paper
the speeds of two objects are varying time to time .... bcoz this is an speed time graph
sorry distance time graph
Answers
Answered by
3
1. B IS 50 UNITS AHEAD OF A.
2. SPEED OF B IS 37.25 units/second
Speed = Distance / time = 75 / 2 = 37.25
3. A will catch B at 75 units
4. Difference between the speed of A and B is
13.25 units/second
Speed of B - Speed of A = 37.25 - 25 = 13.25
Speed of A = Distance / Time = 25 /1 = 25
5. Motion of A is uniform as it cover 25 units in every equal intervals of time. But motion of B is not uniform as it does not cover equal intervals of distance in equal intervals of time.
2. SPEED OF B IS 37.25 units/second
Speed = Distance / time = 75 / 2 = 37.25
3. A will catch B at 75 units
4. Difference between the speed of A and B is
13.25 units/second
Speed of B - Speed of A = 37.25 - 25 = 13.25
Speed of A = Distance / Time = 25 /1 = 25
5. Motion of A is uniform as it cover 25 units in every equal intervals of time. But motion of B is not uniform as it does not cover equal intervals of distance in equal intervals of time.
how did you know about 3rd answer
hey i think 4th one is wrong
umm...me too confused
I'm talking about 4th answer dear
you've taken time istant 1 sec. in case of object A and Time istant 2 sec. in case of object B !!!!!!!
Answered by
5
HEYA MATE !!!
______________.......
I'LL TRY TO SOLVE YOUR QUESTION !!
1). At the start of motion ,
the body B is clearly 50 units away from A.
2). speed = distance / time
= if we take time instance 2 second.
then speed of B = 75 / 2 = 37.5 unit / sec.
3). A will catch B after 2 seconds..
( through graph study )
4).THE SPEED DIFFERENCE B/W THE TWO OBJECTS AT THE TIME INSTANT OF 2 sec. is 0 unit / sec.
Since the time instant at which the difference is to be told is not given !!!!
5).The motion of object B is not uniform because it doesn't covers equal distances at equal intervals of time ..
The motion of A is uniform ( a straight line is observed )
note :- The matter of speed difference can be solved through derivatives also ... but I didn't want to use that bcoz this is 9th class Question.
hope it will help you !!!
*proudly Indian*
______________.......
I'LL TRY TO SOLVE YOUR QUESTION !!
1). At the start of motion ,
the body B is clearly 50 units away from A.
2). speed = distance / time
= if we take time instance 2 second.
then speed of B = 75 / 2 = 37.5 unit / sec.
3). A will catch B after 2 seconds..
( through graph study )
4).THE SPEED DIFFERENCE B/W THE TWO OBJECTS AT THE TIME INSTANT OF 2 sec. is 0 unit / sec.
Since the time instant at which the difference is to be told is not given !!!!
5).The motion of object B is not uniform because it doesn't covers equal distances at equal intervals of time ..
The motion of A is uniform ( a straight line is observed )
note :- The matter of speed difference can be solved through derivatives also ... but I didn't want to use that bcoz this is 9th class Question.
hope it will help you !!!
*proudly Indian*
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