Answer:
Explanation:
The graph show acceleration and time graph and it shows that the acceleration is constant.
a = 0.4m/s²
When a mass is added to the cart it is expected that the acceleration of the cart to reduce.
From newton law
F = ma
a = F/m
So, acceleration is inversely proportional to the mass, so as the mass increases the acceleration reduces.
In this question we are not given the information about the mass added but from the option given, we are going to chose any option that is less than the original acceleration of the cart before the mass was added (0.4m/s²). So, we are going to choose 0.27m/s².
We cannot chose 0m/s², the only time the acceleration will be zero is when the mass added is infinite (∞).
Then, a = F/∞ = 0m/s². So, since the mass added is finite. then, it cannot be zero.
ANSWER:
_________
B and C ( an object stays at rest) and ( an object is moved in the same direction as the force is acting in it)
EXPLANTION:
____________
A is INCORRECT because when an object is being lifted work is being down because if gravity
B is CORRECT because the object is not doing anything
C is CORRECT because it’s not doing the work since the force is pushing the same way as the object is moving
D is INCORRECT because it’s doing work because the force and the object is pushing against each other like this -> <-
FUN FACT:
_________
A cow-bison hybrid is called a “beefalo
I hoped this helped! And have a •AMAZING• day :3
A vector is any quantity that has magnitude and direction. A scalar is any quantity that has magnitude but has no direction.Displacement and velocity are vectors, distamce and speed are scalars.
The kinds of atoms in the substance and their arrangements
Answer:
No a compound has 2 or more pure substances.