The right answer would be
-20t+ 80
the objective measure of the ratio of the rate at which a person expends energy, relative to the mass of that person,
Though it would be very cold, you could put the human manned station of one of Uranus' moons.
Answer:
1.Friction is a catchall word that refers to any force that resists relative tangential motion (or intended motion). "Relative tangential motion" is a fancy way to say "slipping" or "sliding". Its direction is opposite the relative velocity (or intended velocity).
2.Newton’s first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion. Inertia is related to an object’s mass.
Explanation: