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laila [671]
4 years ago
8

What is a good definition of acceleration

Physics
2 answers:
Delicious77 [7]4 years ago
7 0
Acceleration is the rate at which velocity is changing.
Nezavi [6.7K]4 years ago
5 0

A good definition of acceleration is, How fast a velocity is changing at a specific instant. (:

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This graph shows a ball rolling from A to G. The ball starts at point A and rolls to point G.
Lerok [7]

11. B

12. A

13. D

14. The ball burnt off energy while rolling, it lost potential energy and couldn't go as high.

4 0
3 years ago
Any fracture or system of fractures along which Earth moves is known as a
Anton [14]
The answer should be B. Fault.

4 0
4 years ago
Pertaining to simple machines and levers what changes when the fulcrum position is modified
ladessa [460]

Explanation :

Simple machines makes our work easier. Lever is one of the simple machine which consists of rigid rod that is pivoted at a fixed support called as Fulcrum.

There are three classes of lever.

Class 1 : In this type of class, fulcrum is placed in between effort and load. Hence the movement of load is in reverse direction of the movement of effort. (fig 1)

Class 2 : In this type of, the load is between the effort and the fulcrum. Hence, the movement of load is in same direction as that of the effort. (fig 2)

Class 3 : In this type of lever the effort between the load and the fulcrum. Hence, both the effort and load are in same direction. (fig 3)

Hence, when the position of fulcrum is modified the effort force changes.

6 0
4 years ago
The force of repulsion between to like charge table tennis balls is 8.2 X 10 ^-7 N if the charge on the two objects a 6.7 X10^-9
Svetllana [295]

Answer:

0.702 m

Explanation:

The magnitude of the electrostatic force between two charged objects is given by Coulomb's Law:

F=k\frac{q_1 q_2}{r^2}

where

k is the Coulomb's constant

q1, q2 are the two charges

r is the separation between the objects

And the force is:

- Attractive if the two charges have opposite signs (+-)

- Repulsive if the two charges have same sign (++ or --)

In this problem we have:

F=8.2\cdot 10^{-7}N is the force between the two balls

q_1 = q_2 = 6.7\cdot 10^{-9}C is the charge on each ball

Solving for r, we find the separation between the balls:

r=\sqrt{\frac{kq_1 q_2}{F}}=\sqrt{\frac{(9\cdot 10^9)(6.7\cdot 10^{-9})^2}{8.2\cdot 10^{-7}}}=0.702 m

5 0
3 years ago
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A direct result of the Newlands reclamation Act was the
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I think it is building and managing of irrigation systems 
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4 years ago
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