QUIZ 1 Date: 09/27/2017 1. What is the difference between mass, and weight? If o
ID: 1658678 • Letter: Q
Question
QUIZ 1 Date: 09/27/2017 1. What is the difference between mass, and weight? If objects on Earth do not keep moving once they're put into motion, why not, and what's the difference with objects in space? 2. 3. If the force of friction the push or pull force, will the object slow down or come to a stop, explain? 4. If an object is at equilibrium, what is the sum of all the forces acting on it equal to? 5. What is the acceleration of a ball after it has been thrown into the air? 6. How fast is a ball thrown straight up traveling at the very top of its path?Explanation / Answer
1)
Mass is different to weight.
Let us assume mass of an object as m
now the weight of the object will be m*g where m is mass and g is the accleration due to gravity.
We can understand mass as the amount of material contained in a body. The unit of measure of mass is kg, g etc.
However weight if the force exerted by the gravity on the object.
To better understand the weight may vary on earth and moon but the mass is constant.
2)
We need to understand the forces acting on a moving obect in the two different mediums.
On earth there are lot of forces acting on a moving object like friction, air resistance etc.
However in space there are no forces acting on the objects which may hinder or reduce the motion.
3)
Friciton force = force of push/pull
the object will not move
Let us assume the push force be Fp and friction be Ff
Now since the Fp = Ff hence, the net force on the obect is Fp-Ff = 0
the object cannot move with the net force being 0 on it.
Please post remaining questions separately.