4. When a kangaroo jumps, the kangaroo's action force acts on the ground, what would be the reaction force?
acts on the kangaroo
c. lesser than the action force
b. exerted by the ground
d. greater than the action force
a

D

Explanation:

because after the jump it will gain force forst

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

the answer is: metamorphic rocks often show the presence of fossils, also a

hope i

-lavira: )