Answer:
See the answer below
Explanation:
Newton's third law states that for every action, there will always be an opposing reaction of equal magnitude to the action.
<em>Hence, the wall will exert an equal opposing force to the head and the roommate will feel this opposing force as pains and/or headache. </em>
What counteracts gravity is buoyancy.
Answer:
No there is no displacement observed so no work done
length × width × height
20 cm × 10 cm × 5 cm = 1,000 cm