A child of mass 4 kg jumps from cart 
to cart 
and then immediately back to cart 
. The mass of each cart is 20 kg and they are initially at rest. In both the cases the child jumps at 6 m/s relative to the cart. If the cart moves along the same line with negligible friction with the final velocities of 
and
, respectively, find the ratio of 
and
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to cart and then immediately back to cart . The mass of each cart is 20 kg and they are initially at rest. In both the cases the child jumps at 6 m/s relative to the cart. If the cart moves along the same line with negligible friction with the final velocities of and , respectively, find the ratio of andQuestion ID - 101412 | SaraNextGen Top Answer A child of mass 4 kg jumps from cart to cart and then immediately back to cart . The mass of each cart is 20 kg and they are initially at rest. In both the cases the child jumps at 6 m/s relative to the cart. If the cart moves along the same line with negligible friction with the final velocities of and , respectively, find the ratio of and
A child of mass 4 kg jumps from cart to cart and then immediately back to cart . The mass of each cart is 20 kg and they are initially at rest. In both the cases the child jumps at 6 m/s relative to the cart. If the cart moves along the same line with negligible friction with the final velocities of and , respectively, find the ratio of and
(1)
All the velocities shown in diagrams are w.r.t. ground
After first jump:
.png)
and
(given)
Solve to get
When child arrives on 
:
.png)
After the second jump:
.png)
Solve to get
When child arrives on 
:
.png)
Now