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When we throw the object upwards we consider that upward direction as positive.
Therefore, the velocity in that direction is positive but the acceleration due to gravity is in the opposite direction and so it is considered negative.
But when the ball comes down again after reaching a certain height the velocity is in opposite direction to the earlier one and so the velocity now is negative as a result the acceleration is again negative.
What else can I help you with?
When object moves upwards what is the velocity and acceleration?
When an object is moving upwards, its velocity is directed upwards. If the object is near the Earth or any other planet, then its acceleration is directed downwards, which also means that its upward velocity is decreasing.
How do you describe an object that gains excess electrons after being rubbed against another object?
The object is described as negatively charged or having acquired a negative charge. This occurs because it gains excess electrons when rubbed against another object, causing it to have an imbalance of negative charges.
What Negative acceleration definition with examples?
Negative acceleration, also known as deceleration, occurs when an object slows down due to an opposing force acting against its motion. For example, a car braking to come to a stop or a ball thrown upwards reaching the peak of its trajectory experience negative acceleration. It is quantified by a decrease in velocity over time.
What is the force that acts against gravity?
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.
How can the concept of work be negative in the context of physics?
In physics, work is considered negative when the force applied to an object is in the opposite direction of the object's displacement. This means that the force is doing work against the motion of the object, resulting in a negative value for the work done.
When object moves upwards what is the velocity and acceleration?
When an object is moving upwards, its velocity is directed upwards. If the object is near the Earth or any other planet, then its acceleration is directed downwards, which also means that its upward velocity is decreasing.
Why does an object seem lighter in the water than in air?
Water constantly pushes upwards against an object making it seem lighter.
What is an example of Gravitation?
The law of Universal Gravitation states that every object in the universe attracts every other object.
What is an example of universal gravitation?
The law of Universal Gravitation states that every object in the universe attracts every other object.
How do you describe an object that gains excess electrons after being rubbed against another object?
The object is described as negatively charged or having acquired a negative charge. This occurs because it gains excess electrons when rubbed against another object, causing it to have an imbalance of negative charges.
What Negative acceleration definition with examples?
Negative acceleration, also known as deceleration, occurs when an object slows down due to an opposing force acting against its motion. For example, a car braking to come to a stop or a ball thrown upwards reaching the peak of its trajectory experience negative acceleration. It is quantified by a decrease in velocity over time.
What is the force that acts against gravity?
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.
How can the concept of work be negative in the context of physics?
In physics, work is considered negative when the force applied to an object is in the opposite direction of the object's displacement. This means that the force is doing work against the motion of the object, resulting in a negative value for the work done.
How does the concept of gravitation affect the inertia of an object?
The concept of gravitation affects the inertia of an object by influencing its resistance to changes in motion. In simpler terms, the gravitational force acting on an object can make it harder or easier for the object to start moving, stop moving, or change direction.
What is a measure of gravitational force of an object?
meters per second squared (m/s^2) the gravitation acceleration, acquired by experimental values =-9.8m/s^2. negative since its falling
Why is normal force pointing upwards?
The normal force is a reaction force exerted by a surface in response to an object pressing against it. It always acts perpendicular to the surface and opposes the force pushing the object against it. As gravity pulls the object downwards, the normal force acts in the opposite direction, pointing upward to prevent the object from sinking into the surface.
What are the factors that affect gravitation?
Mass of the first object, mass of the second object, distance between the objects.
