Intext example VII — task. Science CBSE, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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A girl of mass 40 $kg$ jumps with a horizontal velocity of 5

$m s^{- 1}$ onto a stationary cart with frictionless wheels. The mass of the cart is 3 $kg$ .(Enter the values up to two decimal)

What is her velocity as the cart starts moving? Assume that there is no external unbalanced force working in the horizontal direction.

Let us consider,

$m_1$ be the mass of first player

$m_2$ be the mass of second player

$u_1$ be the initial velocity of the girl before interaction

$u_2$ be the initial velocity of the cart before interaction

$v$ be the final velocity after interaction

From the law of conservation of momentum, We know that,