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CBSE Class 9 Answered

A bus travels a distance of 120 km with a speed of 40 km/h and returns with a speed of 30 km/h calculates the average speed for the entire journey
Asked by chandraanaldas5 | 28 Apr, 2019, 11:26: AM
answered-by-expert Expert Answer
Time taken for onward journey = 120/40 = 3 hour
Time taken for return journey = 120/30 = 4 hour
 
average speed = total distance/ Total time = 240/7 ≈ 34.3 km/hr
Answered by Thiyagarajan K | 28 Apr, 2019, 12:55: PM

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CBSE 9 - Physics
An object of mass 1kg is falling from the height h=10m.calculate a) the total energy of an object at h=10m b) potential energy of the object when it is at h=4m c) kinetic energy of the object when it is at h=4m d) what will be the speed of the object when it hits the ground
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CBSE 9 - Physics
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CBSE 9 - Physics
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CBSE 9 - Physics
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CBSE 9 - Physics
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