An athlete takes 2.0 s to reach his max speed of 18 km/h.what is the magnitude of his avg acceleration
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Answer:
2.5m/s^2
Explanation:
Acceleration of a body= final velocity- initial velocity/time
u=0=initial velocity
v=18km/h or 18X1000m/60X60sec= final velocity
=18000/3600
=5
time=2
acceleration= 5-0 /2
=2.5m/s^2
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