Answer:
D. It is easy to copy.
Explanation:
It is not B, or A, nor C.
Answer:
This can be the FBD of the bag.
(my bag looks more like a box tho ^^")
K = 1/2 m x v^2
m = mass on the cart
V = velocity imparted to the cart
KA = 1/2 mA x vA^2.......................(1)
KB = 1/2 mB x vB^2........................(2)
Diving equation 1 by equation 2, we get -
KA/KB = mA/mB
= 2
KA = 2 x KB
Option A is correct
Metals in general, are good heat conductors