The formula for finding the acceleration of the car is
a = (product of sum and difference of velocities)/2(total distance)
In a journey of 2 km, initial and final velocities of the car are 18 km/hr and 90 km/hr respectively. Calculate the acceleration.

• velocities in m/s are 18*5/18 = 5 m/s and 90*5/18 = 25 m/s
  and 2 km = 2000 m
  so acceleration = 30*20/2*2000 = 0.15
• 12 years agoHelpfull: Yes(4) No(2)
• v= 90*5/18 = 25m/sec
  u= 18*5/18 = 5 m/sec
  s= 2000 m
  
  a= (25^2-5^2)/(2000*2 )= 600/4000 = 3/20 m/sec^2
• 12 years agoHelpfull: Yes(2) No(1)
• v= 90*5/18 = 25m/sec
  u= 18*5/18 = 5 m/sec
  s= 2000 m
  
  a= (25^2-5^2)/(2000*2 )= 600/4000 = 3/20 m/sec^2
• 12 years agoHelpfull: Yes(0) No(1)
• 18.
  a = (vf-vi)/2(total distance) therefore
  a = (90-18)/2(2) which yields the answer of 18.
• 12 years agoHelpfull: Yes(0) No(0)
• [(18+90)*(90-18)]/2*2=(108*72)/4=1944
• 12 years agoHelpfull: Yes(0) No(0)