A particle moving with speed 20 m/s
comes to rest in. 50s, find
A. Accelaration
B. Distance covered.
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Answer:
v = 0m/s
u = 20m/s
t = 50s
a = ?
[ a = v - u / t ]
a = 0m/s - 20m/s / 50s
a = -20m/s / 50s
a = -0.4m/s^2
acceleration = -0.4m/s^2
u = 20m/s
t = 50s
a = -0.4m/s^2
s = ?
[ s = ut + 1/2at^2 ]
s = 20m/s * 50s + 1/2 * -0.4m/s^2 * ( 50s )^2
s = 1000m + ( -0.2m/s^2 ) * 2500s^2
s = 1000m - 500m
s = 500m
distance = 500m
༄ hope it helps ༄❆
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