Answer: having to push a rough and heavy box across the floor to move it
Explanation:
The Friction force is any force that is in opposite direction of the motion of an object or fluid due to the contact of this object or fluid with other bodies.
In this sense, there are different types of friction force thath are useful in different situations:
-The <u>Static friction force</u> prevents surfaces from slipping across each other. For example, the friction between your feet and the floor keeping you from slipping.
-The <u>kinetic friction force</u> as the force that helps the tires in a moving vehicle to slow down and stop when necessary.
However, if you want to push a heavy box across the floor to move it, the friction force will not be useful at all.
Answer:
Explanation:
From the question we are told that:
Radius 
Current 
Normal vector 
Magnetic field 
Generally the equation for Area is mathematically given by
Generally the equation for Torque is mathematically given by
Where
![X\ component\ of\ i'*B= [(-1 * 0)-(2*-6)]](https://tex.z-dn.net/?f=X%5C%20component%5C%20of%5C%20i%27%2AB%3D%20%5B%28-1%20%2A%200%29-%282%2A-6%29%5D)
Therefore
Acceleration is the way the motion is changing.
Starting velocity (u)=0
acceleration (a) = 9.8
time (t) = 1.5
final velocity (v) =?
v=at+u
v=9.8(1.5)+0
v=14.7m/s2
Answer:
e).
Explanation:
Assuming no external forces acting during the instant of the explosion, total momentum must be conserved.
As the object was initially at rest, the initial momentum is zero, which means that after the explosion, total momentum must add to zero too.
Let's call m₁ = 3 kg-piece and m₂= 6 kg-piece.
⇒ m₁*v₁ + m₂*v₂ = 0
⇒ 3kg* v₁ = -6kg*v₂
⇒ 6/3 = 2 = v₁/v₂ ⇒ v₂/v₁ = 1/2 (in magnitude)
v₂ (being the speed of the 6-kg piece) = 1/2 * v₁ (speed of thr 3-kg piece).
So, we conclude in that the statement e) is the one that is true.
