Question

An object moves through 10m in 2 minutes and next 10m in 3 minutes.Calculate
average speed
C) A body starts from rest and moves a distance of 1 km in 20 sec.find acceleration.​

Answer 1

❥︎ʜᴏᴘᴇ ᴛʜᴇ ᴘɪɴɴᴇᴅ ɪᴍᴀɢᴇ ʜᴇʟᴘs ᴜ

❥︎ʙᴇ ʜᴀᴘᴘʏ ᴅᴇᴀʀ

❥︎ᴘʟs ᴍᴀʀᴋ ᴍᴇ ᴀs ʙʀᴀɪɴʟɪsᴛ ᴘʟs

Answer 2

Answer:

1.) Average speed =4 m per minute

2.) Acceleration= 5m/sec^2

Explanation:

Average speed = (Total doistance travelled) / ( Total time taken)

So,

Average speed = (10+10)/(2+3)

=(20/5)

=4 m /min

According to the second law of motion,

S = ut + (1/2)×a×t^2

1000m = (0×20) +(1/2)×a× 20 sec×20sec

1000 = 200a

So,

a = (1000/200) m/sec^2

a = 5 m/sec^2