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Why is it advantageous to turn before taking a long jump? - Physics

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प्रश्न

Why is it advantageous to turn before taking a long jump?

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उत्तर

It is advantageous to run before taking a long jump because after running we get motion of inertia which helps in long jumping

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पाठ 3: Laws of Motion - Exercise 3 [पृष्ठ १२९]

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फ्रँक Physics [English] Class 9 ICSE
पाठ 3 Laws of Motion
Exercise 3 | Q 20 | पृष्ठ १२९

संबंधित प्रश्‍न

A constant force F = m2g/2 is applied on the block of mass m1 as shown in the following figure. The string and the pulley are light and the surface of the table is smooth. Find the acceleration of m1.


A block is kept on the floor of an elevator at rest. The elevator starts descending with an acceleration of 12 m/s2. Find the displacement of the block during the first 0.2 s after the start. Take g = 10 m/s2.


A body of mass m moving with a velocity v is acted upon by a force. Write an expression for change in momentum in each of the following cases: (i) When v << c, (ii) When v → c and (iii) When v << c but m does not remain constant. Here, c is the speed of light.


State Newton's second law of motion. Under what condition does it take the form F = ma?


How can Newton's first law of motion be obtained from the second law of motion?


A pebble is dropped freely in a well from its top. It takes 20 s for the pebble to reach the water surface in the well. Taking g = 10 m s-2 and speed of sound = 330 m s-1. Find : The depth of water surface


An electron of mass 9 × 10−31 kg is moving with a linear velocity of 6 × 107 ms−1. Calculate the linear momentum of electron.


Define Newton’s second law of motion.


A cricket ball of mass 150 g has an initial velocity `u = (3hati + 4hatj)` m s−1 and a final velocity `v = - (3hati + 4hatj)` m s−1 after being hit. The change in momentum (final momentum-initial momentum) is (in kg m s1)


In the previous problem (5.3), the magnitude of the momentum transferred during the hit is ______.


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