Answer: False
explanation: because Total momentum is conserved only if the collision can be considered isolated from the influence of net external forces
Answer:
The 10 kg rock has more inertia than the other two rocks.
Explanation
Answer:
Concrete
Explanation:
The speed at which sound propagates is medium dependent. As one of the forms of mechanical waves, sound requires a material medium for propagation from place to place.
- Sound travels with the least speed in air because air particles are far apart and they are randomized.
- Sound travels with the greatest speed in solids. Concrete is the only solid material given in the choice.
The speed of sound increases from air to liquid and to solid.
