Question

1. a vechicle is moving at a constant velocity of 10km/h in the north south direction .it turns and start moving towards east .what is the velocity of the vehicle towards east before taking the turn ? 2. identify in the situation given below , where the object is making a uniform circular motion . (a) motion given to a discus by an athlete before realesing it . (b) a car going uphill with uniform speed .

Answer 1

ʜɪɪ ᴅᴇᴀʀ..

ᴛʜᴇ ᴄᴇɴᴛʀɪᴘᴇᴛᴀʟ ꜰᴏʀᴄᴇ ᴀᴠᴀɪʟᴀʙʟᴇ ᴛᴏ ᴛᴜʀɴ ᴛʜᴇ ᴄᴀʀ (ᴛʜᴇ ... ꜱᴏ, ɪᴛ ᴍᴀᴋᴇꜱ ꜱᴇɴꜱᴇ ᴛʜᴀᴛ ᴡᴇ ꜰᴏᴜɴᴅ ᴏɴᴇ ᴘᴀʀᴛɪᴄᴜʟᴀʀ ꜱᴘᴇᴇᴅ ᴀᴛ ᴡʜɪᴄʜ ... ᴀ ꜰʀᴇᴇ-ʙᴏᴅʏ ᴅɪᴀɢʀᴀᴍ ꜰᴏʀ ᴛʜᴇ ᴄᴀʀ ɪꜱ ꜱʜᴏᴡɴ ᴀᴛ ʟᴇꜰᴛ.

1.0

Answer 2

Answer: The answers are 10√2 and B

Explanation:

• Considering the vehicle didn't change the speed after the turn towards the east.
• Velocity in North south direction = 10 j where j is the unit vector along North-South direction
• Velocity in East direction = 10 i where i is the unit vector along East direction
• The change in velocity = v' = 10j - 10i = 10(j-i)
• v' = 10√2 is the magnitude of change of velocity.
• A. Motion is given to a discuss by an athlete, The athlete will try to throw the discuss as far as possible, but for that, at every turn he/she need to increase the momentum, for which increase in velocity is required. Therefore the object is not making a uniform circular motion.
• So option B is correct. A car going uphill with uniform speed .

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