at 9:30 a car is moving at 110 km/hr . then acceleration occurs on the car of 5m/sec2 . find the speed of the car at 9:35
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Answer:
1530 m/s (5510 km/h)
Explanation:
At 9 : 30 car is moving at 110 km/h, then acceleration occurs on the car of 5 m/s². Find the speed of the car at 9 : 35.
Solution -
Initial Speed (u) = 110 km/h = 110×5/18 m/s = 550/18 m/s = 30.55 m/s
Acceleration = 5 m/s²
Starting time = 9 : 30
Ending time = 9 : 35
Total time of acceleration = ending - starting time
= 9 : 35 - 9 : 30
= 5 min = 5× 60 s
= 300 s
To find -
Final speed (v)
By using the first equation of acceleration
v = u + at
= 30.55 m/s + (5 m/s² × 300 s)
= 30.55 m/s + 1500 m/s
= 1530.55 m/s
Hence the speed at 9 : 35 will be 1530.55 m/s (5510 km/h)
hope it helps.
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