Frictional force acts against speed of any object.
The force that acts against gravity is called the normal force. It is exerted by a surface supporting an object, pushing upwards to prevent the object from falling due to gravity.
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The force that acts against upthrust is gravity. Gravity pulls objects downward, opposing the buoyant force provided by upthrust.
Buoyant force acts against gravity in water. This force is exerted by the water on an object that is submerged or floating in it and acts in the opposite direction to gravity. Bouyant force is what allows objects to float and feel lighter when in water.
Buoyancy is the power to float or rise in a liquid and it acts against the force of gravity.
An example of air resistance force is when a skydiver jumps out of a plane and experiences the force pushing against them as they fall through the air. This force acts in the opposite direction to the skydiver's motion and increases as their speed increases.
The force that acts against the force of buoyancy is gravity. Buoyancy is the upward force exerted by a fluid that opposes the weight of an object immersed in the fluid. Gravity, on the other hand, pulls objects downwards.
Friction is a force that acts against the movement of an object. It is caused by the resistance between surfaces when they come into contact with each other.
When an unbalanced force acts on an object, it will cause the object to accelerate in the direction of the force. This acceleration will cause the speed of the object to change over time, either increasing or decreasing depending on the direction of the force.
Buoyancy is the power to float or rise in a liquid and it acts against the force of gravity.
Friction is the force that acts against all moving objects, slowing them down. It is caused by the contact between the object and the surface it is moving on.
The force of friction always acts against the direction of movement. Friction opposes the relative motion between two surfaces in contact, causing it to slow down or eventually come to a stop.