Which description is evidence of chemical weathering? k
O A. A rock in a windy desert has scratches on
its surface.
B. A rock in a tundra has deep cracks filled
with ice.
C. A rock turns a reddish color when
exposed to air and water.
D. A rockban a steep slope falls to the
ground and breaks apart.
Check

b.

Explanation: I do not know much about this but the answer that i think it is was b.

Here we know that internal energy of arrow has been increased by 40.48 J as it is striking to the target

so here by energy conservation we can say

initial kinetic energy of arrow = final internal energy of the arrow

so here we have

so here since increase in the internal energy is 40.48 J

so the kinetic energy will be given as