the pace length P is d distance between d rear of 2 consecutive footprints. for men d formula n/p=180 gives an approximate relation btween n & p where n = no. of steps/min p= pace length in meters. A knows his pace length is 120cm. the formula appllies to A's walking.calculate A's walking speed in km/hr
opt:
a) 236.16
b)8.78
c)15.56
d)23.62

• as n/p = 180(given), so we have p = 1.20
  so n = 216steps/min
  as 1 step = 1.20 m
  so n = 259.2 meter/min
  now n (in km/h) = 15.55
• 12 years agoHelpfull: Yes(25) No(0)
• 180*60*120^2/10^7=15.55
• 12 years agoHelpfull: Yes(2) No(2)
• pace lnght of a =120cm=1.2m now n/p=180 so no of steps taken by a is n=(180*1.2)=216steps. now pace lenghth p= distance btwn 2 cnsequtve footprints=the distance covered by p during 1 footstep=1.2m so distance covered by 216 footsteps=(216*1.2)=259.2 m/min=15.55 km/hr so ans is(c)
• 12 years agoHelpfull: Yes(1) No(1)
• why 120^2 ? VASU
• 12 years agoHelpfull: Yes(0) No(1)