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Grade 6Mechanics

An athelete takes 2s to reach his maximum speed of 18km/hr . What is the magnitude of his average accelaretion

Profile image of Soumith Chowdary
9 Years agoGrade 6
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1 Answer

Profile image of Saransh Anand
9 Years ago
v = 18km/hr = 5m/s 
u=0 m/s
t = 2 s 
a = ?
 
According to equation of motion 
v = u + a.t 
5 = 0 + a.2 
a = 5/2
   = 2.5 m/s2