ANSWER:
_________
B and C ( an object stays at rest) and ( an object is moved in the same direction as the force is acting in it)
EXPLANTION:
____________
A is INCORRECT because when an object is being lifted work is being down because if gravity
B is CORRECT because the object is not doing anything
C is CORRECT because it’s not doing the work since the force is pushing the same way as the object is moving
D is INCORRECT because it’s doing work because the force and the object is pushing against each other like this -> <-
FUN FACT:
_________
A cow-bison hybrid is called a “beefalo
I hoped this helped! And have a •AMAZING• day :3
1) In machines, efficiency reduces due to friction has energy may be lost as heat. 2) When one falls and slides over rough surface like cement, then the injury caused is more.
Speed has now direction while velocity does. For example, if i say that im running at 10 mph, i have given you my speed<span>. If i say that i am running at 10 mph north, then i haven given you my velocity</span><span> Acceleration is the rate of change in velocity. </span>
The pressure exerted on the stone is
What is pressure?
- The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure (symbol: p or P).
- A scalar quantity, pressure. It connects the normal force operating on the surface and the vector area element, which is normal to the surface. The scalar scale parameter is pressure.
- The pascal (Pa), or one newton per square meter, is the SI unit for pressure.
- A force is an effect that has the power to alter an object's motion. A motion of an object having mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both direction and magnitude.
Formula for pressure = Force / area
The required answer is
Learn more about pressure here:
brainly.com/question/25965960
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One is for far distance the other is for close range