Question

A girl of mass 40 kg jumps with a horizontal velocity of 5 m/s onto a stationary cart with frictionless wheels .the mass of the cart 3 kg what her velocity as the cart starts moving assume that there is no external unbalanced force working in horizontal direction

Answer 1

Mass of Girl (M) = 40 Kg
Velocity of Girl (V) = 5 m/s
Mass of Cart = Mass of girl + Mass of cart = 43 Kg



=> MV = mv

=> 40 x 5 = 43 x v

=> 200/43 = v

=> v = 4.65 ms^-1

Answer 2

Answer:

Mass of Girl (M) = 40 Kg

Velocity of Girl (V) = 5 m/s

Mass of Cart = Mass of girl + Mass of cart = 43 Kg

=> MV = mv

=> 40 x 5 = 43 x v

=> 200/43 = v

=> v = 4.65 ms^-1

Explanation:

Mass of Girl (M) = 40 Kg

Velocity of Girl (V) = 5 m/s

Mass of Cart = Mass of girl + Mass of cart = 43 Kg

=> MV = mv

=> 40 x 5 = 43 x v

=> 200/43 = v

=> v = 4.65 ms^-1