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A train travels with speed 40 km h^(-1) ...

A train travels with speed `40 km h^(-1)` for first 15 minutes and then 60 km h for next 15 minutes, hence its average speed during this time interval is 50 km `h ^(-1).`

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KUMAR PRAKASHAN-MOTION -TRUE OR FALSE
  1. An object performing uniform circular motion performs accelerated moti...

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  2. An object had covered 120 km distance, half of this distance was cover...

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  3. A train travels with speed 40 km h^(-1) for first 15 minutes and then...

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  4. The slope of the distance-time (xt) graph gives the magnitude of accel...

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  5. The unit of retardation is ms^(-2).

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  6. The direction of acceleration of an object performing uniform circular...

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  7. If the final velocity of an object is less than the initial velocity, ...

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  8. The SI unit of speed is km h ^(-1).

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  9. Motion is a relative concept.

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  10. For both the distance and displacement SI unit is metre.

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  11. The magnitude of the displacement of an object is 20 m, then it can be...

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  12. The distance covered by an object in the given time duration may be po...

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  13. The displacement of an object in a given time interval may be zero.

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  14. Average speed is an average of different speeds.

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  15. An object performs motion with constant speed along a circular path, t...

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  16. An object performing uniform circular motion performs accelerated moti...

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  17. An object had covered 120 km distance, half of this distance was cover...

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  18. A train travels with speed 40 km h^(-1) for first 15 minutes and then...

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  19. The slope of the distance-time (xt) graph gives the magnitude of accel...

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  20. The unit of retardation is ms^(-2).

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