Answer:
Kinetic energy is the energy an object has because of its motion.
Explanation:
ldk it's probably "object" that's all I know
Answer:
The only work done is when the person lifts the sack over a distance, W = 78.48 [N]
Explanation:
We have to remember the definition of work, which tells us that work is the result of a force by a distance, we must apply this concept in each of the movements of the person in the problem described.
W = F * d
where:
F = force [N]
d = distance [m]
The force is given by the producto of the mass by the gravity.
F = 5 * 9.81 = 49.05 [N]
W = 49.05 * 1.6 = 78.48 [N]
Answer:
Two football players pushing a tackling shed
Explanation:
They're working together to push it. (I also answered this and that was the correct answer)
<span>If I will be the judge, the passenger will not be injured by
suitcase came from the front of the bus because when the driver slammed the
break the inertia of the force must be moving forward. It impossible for a suit
case to move backwards, maybe the passenger was the one flying forward and hit
something </span>
Answer:
Hemoglobin is a protein (because it's a molecule that's not a living part of the cell but aids in cell processes).