What is the acceleration of a block in this scenario?

In summary, the conversation is about a person preparing for an exam and doing practice questions. The person already knows the answer to one question but is looking for an explanation. They initially thought the answer was 6N but it wasn't an option. The other person asks if they formed up the force equations and requests them to show their work. The person then realizes their mistake and explains that the question was simpler than they thought. They also mention that they have more questions. The other person explains that the sign doesn't matter and what's important is the direction of the coordinate system, which shows that the bigger force is acting downwards.
  • #1
Benja303
2
0

Homework Statement



Okay, i am preparing for an exam so the questions i am doing are only for my learining they will not be marked anyway

I already know that the answer is C) 0.5ms-2

what i need is an explanation, i don't understand how that answer was derived...

I thought it would be 6N but that wasn't an option

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  • #2
Why do you think would it be 6N? Did you form up the force equations?

Please show your work. :smile:
 
  • #3
Infinitum said:
Why do you think would it be 6N? Did you form up the force equations?

Please show your work. :smile:

Oh *Face palm* its complicated to explain but i thought this question was asking something else. i now realize how utterly simple it is..

acc= 6/12 nd that's why it's 0.5.. OKay... So how do i know it was going downwards?

wouldn't it be 0.5 upwards since teh number is positive? Btw i have many more questions so if your going to stick around i i have a lot more to ask..
 
  • #4
Benja303 said:
Oh *Face palm* its complicated to explain but i thought this question was asking something else. i now realize how utterly simple it is..

acc= 6/12 nd that's why it's 0.5.. OKay... So how do i know it was going downwards?

wouldn't it be 0.5 upwards since teh number is positive? Btw i have many more questions so if your going to stick around i i have a lot more to ask..

It doesn't matter what the sign is, what matters is which way you take your coordinate system. Now the bigger force is obviously acting downwards. So...there you go :wink:
 
  • #5


The acceleration of the block in this scenario is 0.5 ms^-2. This can be determined by using Newton's second law, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In this scenario, the net force acting on the block is 3N (9N - 6N), and the mass of the block is 6kg. Plugging these values into the equation F=ma, we get a = F/m = 3N/6kg = 0.5 ms^-2. This means that for every second the block is in motion, its speed will increase by 0.5 meters per second.
 

FAQ: What is the acceleration of a block in this scenario?

What is acceleration?

Acceleration is the rate of change of an object's velocity over time. It is a vector quantity, meaning it has both magnitude (speed) and direction.

How is acceleration calculated?

Acceleration can be calculated by dividing the change in velocity by the change in time. The formula for acceleration is: a = (vf - vi) / t, where "a" is acceleration, "vf" is final velocity, "vi" is initial velocity, and "t" is time.

What is the difference between acceleration and velocity?

Velocity is the rate of change of an object's position over time, while acceleration is the rate of change of an object's velocity over time. In simpler terms, velocity describes how fast an object is moving, while acceleration describes how quickly the object's velocity is changing.

How is acceleration related to force?

According to Newton's Second Law of Motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. In other words, the greater the force applied to an object, the greater its acceleration will be.

What factors affect the acceleration of a block?

The acceleration of a block can be affected by several factors, including the force applied to it, its mass, and the surface it is moving on. Friction and air resistance can also affect the acceleration of a block.

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