A car increases its speed from 20km/hr to 50km/hr in 10 seconds it's acceleration is
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First change the speeds from km/h to m/s by multiplying by 1000/3600
v1 = 20 km/h = 20000/3600 = 5.555...m/s
v2 = 50 km/h = 50000/3600 = 13.888...
change in speed, Δv = 13.89 - 5.56 = 8.33 m/s
t = 10 s
Acceleration = chnage in speed / time = Δv / t
= (8.33 m/s) / (10 s)
= 0.833 m/s²
v1 = 20 km/h = 20000/3600 = 5.555...m/s
v2 = 50 km/h = 50000/3600 = 13.888...
change in speed, Δv = 13.89 - 5.56 = 8.33 m/s
t = 10 s
Acceleration = chnage in speed / time = Δv / t
= (8.33 m/s) / (10 s)
= 0.833 m/s²
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