Speed = distance travelled/time
S = 6m/2s
S = 3m/s
You are in one place when you doze off, and in a different place when you awake.
Stratosphere is THE LAYER OF ATMOSPHERE THAT PROTECTS US because it contains OZONE. Ozone is also a layer that protects us from the direct rays/ UV RAYS of the SUN
We are given an object sliding down an incline with a friction force. A free-body diagram of the system is the following:
Now we will add the forces in the x-direction:
We will consider the forces that are in the direction of the movement as positive and the ones in the direction against the movement as negative. Plugging in the forces:
Now we solve for the friction force:
Multiplying both sides by -1:
Now we determine the x-component of the weight using the following triangle:
From the triangle we can use the function cosine as follows:
From this we can solve for the x-component of the weight by multiplying both sides by "mg":
Now we use this expression and replace it in the sum of forces:
Now we plug in the known values:
Solving the operations:
Therefore, the friction force is 171.5 Newtons.
Answer:
20 N
Explanation:
The gravitational force for block B will be given by mg where m is mass of the block and g is gravitational constant, in this case taken as
Substituting 2 Kg for m we obtain
Fg=2*10=20 N
Therefore, the gravitational force exerted by block B is nearly 20 N and acts downwards