Multiple Choice: A Ball Rolls Off the Edge & Forces on an Object

In summary, the conversation discusses a ball rolling off the edge of a horizontal roof at 10.0m/s and the speed of the ball after two seconds. The options provided for the speed of the ball are 9.80m/s, 10.0m/s, 19.6m/s, 29.6m/s, or none of the above. The second part of the conversation involves two forces of 10 N each acting on an object at an angle of 120 degrees. The question asks for the magnitude of the resultant force on the object, with the options being 10N, 14N, 17N, 20N, or 0N.
  • #1
memoi567
1
0
1. A ball rolls of the edge of a horizontal roof at 10.0m/s. Two seconds later the speed of the ball will be...

a)9.80 b)10.0 c)19.6 d)29.6 e)none

2. Two forces of 10 N each act on an object. the angle between the forces is 120degrees. the magnitude of the resultant force on the object is___N.

a) 10 b) 14 c) 17 d) 20 e) 0
 
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  • #2
memoi567 said:
1. A ball rolls of the edge of a horizontal roof at 10.0m/s. Two seconds later the speed of the ball will be...

a)9.80 b)10.0 c)19.6 d)29.6 e)none

2. Two forces of 10 N each act on an object. the angle between the forces is 120degrees. the magnitude of the resultant force on the object is___N.

a) 10 b) 14 c) 17 d) 20 e) 0

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  • #3


I would like to clarify that the given information is not sufficient to accurately answer the questions. In order to determine the speed of the ball after two seconds, we would need to know the acceleration due to gravity and the height of the roof. Similarly, to calculate the magnitude of the resultant force, we would need to know the individual magnitudes and directions of the two forces acting on the object. Therefore, without this additional information, it is not possible to provide an accurate response to the given content.
 

What is the concept of a ball rolling off the edge?

The concept of a ball rolling off the edge refers to a situation where a ball, initially at rest, falls off the edge of a surface and begins to roll due to the force of gravity acting on it.

What is the force that causes a ball to roll off the edge?

The force that causes a ball to roll off the edge is the force of gravity. This force pulls the ball towards the ground and causes it to accelerate downwards.

What are the forces acting on an object when a ball rolls off the edge?

When a ball rolls off the edge, there are two main forces acting on the ball: the force of gravity pulling the ball downwards and the normal force exerted by the surface on the ball. The normal force is equal in magnitude and opposite in direction to the force of gravity, and it prevents the ball from falling through the surface.

How does the force of gravity affect the acceleration of a ball rolling off the edge?

The force of gravity causes the ball to accelerate downwards as it falls off the edge. This acceleration is constant and is equal to the acceleration due to gravity, which is approximately 9.8 meters per second squared.

What factors can affect the speed and distance of a ball rolling off the edge?

The speed and distance of a ball rolling off the edge can be affected by factors such as the angle of the edge, the mass and size of the ball, air resistance, and the surface the ball is rolling on. These factors can either increase or decrease the speed and distance of the ball's roll.

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