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A 100 m long train is moving with a uni...

A 100 m long train is moving with a uniform velocity of `45 km//hr`. The time taken by the train to cross a bridge of length 1 km is

A

58s

B

68s

C

78s

D

88s

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SL ARORA-MECHANICS-Exercise
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  2. A person travelling on a straight line moves with a uniform velocity v...

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  3. A 100 m long train is moving with a uniform velocity of 45 km//hr. ...

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  4. You drive a car at a speed of 70 km//h in a straight road for 8.4 km, ...

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  5. A car moving with a speed of 25 ms^(-1) takes a U-turn in 5 seconds, ...

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  6. A particle moves along the x-axis with a position given by the equatio...

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  7. The motion of a particle is described by the equation at u = at.The di...

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  8. The acceleration a of a particle starting from rest varies with time a...

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  9. Given a = 2t + 5. Calculate the velocity of the body after 10 sec if i...

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  10. With the usual notations the following equation S(t)=u+1/2a(2t-1) is

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  11. What is the relation between displacement, time and acceleration in ca...

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  12. A body sliding down on a smooth inclined plane slides down 1//4th dist...

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  13. A particle moving in one dimension with a constant acceleration of 2 m...

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  14. A particle starts from rest, accelerates at 2(m)/(s^2) for 10 s and th...

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  15. The velocity of a particle at an instant is 10 m s^(-1). After 3 s its...

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  16. A particle starts from rest with uniform acceleration a. Its velocity...

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  17. A car accelerates from rest at a constant rate for some time after wh...

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  18. The velocity with which a body stricks the ground is always equal to ...

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  19. If a ball is thrown vertically upwards with a velocity of 40m//s, then...

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