A 180 metre long train is moving due north at a speed of 25 m/s. A small bird is flying due south, a little above the train, with a speed of 5 m/s. The time taken by the bird to cross the train is

1.10 s

2.12 s

3.9 s

4.6 s

A body starts from rest and travels for five seconds to make a displacement of 25 m if it has travelled the distance with uniform acceleration a then a is

1.3 m/sÂ²

2.4 m/sÂ²

3.2 m/sÂ²

4.1 m/sÂ²

A body starts from rest and travels for t second with uniform acceleration of 2 m/sÂ². If the displacement made by it is 16 m, the time of travel t is

1.4 s

2.3 s

3.6 s

4.8 s

A body starts from rest and travels with an acceleration of 2 m/sÂ². After t seconds its velocity is 10 m/s . Then t is

1.10 s

2.5 s

3.20 s

4. 6 s

A body starts from rest and travels with an acceleration of 2 m/sÂ². After t seconds its velocity is 10 m/s. Then t is

1.10 s

2. 5 s

3.20 s

4.6 s

A body starts from rest and travels with uniform acceleration a to make a displacement of 6 m. If its velocity after making the displacement is 6 m/s, then its uniform acceleration a is

1. 6 m/sÂ²

2.2 m/sÂ²

3.3 m/sÂ²

4.4 m/sÂ²

A body starts from rest and travels with uniform acceleration of 2 m/sÂ². If its velocity is v after making a displacement of 9 m, then v is

1.8 m/s

2.6 m/s

3.10 m/s

4.4 m/s

A boy starts from a point A, travels to a point B at a distance of 1.5 km and returns to A. If he takes one hour to do so, his average velocity is

1.3 km/h

2.zero

3.1.5 km/h

4.2 km/h

A boy starts from a point A, travels to a point B at a distance of 3 km from A and returns to A. If he takes two hours to do so, his speed is

1.3 km/h

2.zero

3.2 km/h

4.1.5 km/h

The displacement in metres of a body varies with time t in second as y = t2 â€“ t â€“ 2. The displacement is zero for a positive of t equal to

1.1 s

2.2 s

3.3 s

4.4 s

Which one of the following is the unit of velocity?

1. kilogram

2.metre

3.m/s

4.second

Which one of the following is the unit of velocity?

1.kilogram

2.metre

3.m/s

4.second

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