A ball rolls down an inclined track 2m long in 4s.find time taken to cover the second metre of the track
The ans is wrong becoz it will 1.17 second and not 1.7 seconds
Time taken to cover second metre
Distance traveled=1m
Acceleration=0.25m/s^2
Using,s=ut+1/2at^2
1=1/2*1/4*t^2
1=1/8*t^2
t=2√2
So,time taken to cover last 1m=4-2√2=1.7s