if g = 10(m/s)/s then force down = ma = 10*1.4=14n
14n-2.5n=11.5n
a=f/m = 11.5/1.4 = 8.21 (m/s/)s
-- The gravitational force on a 1.4 kg object = m g = 1.4 x 9.807 = 13.73 Newtons.
-- If a force of 2.5 N acts against gravity, then the net downward force on
the object is 11.23 N.
-- 11.23 N = 81.79% of the object's weight, so its acceleration is 81.79% of the
gravitational acceleration = 8.02 meters per second2.
a constant horizontal speed
The magnitude of the velocity will increase. The velocity will be downward - and since it increases, the acceleration will be downward. The acceleration doesn't change (it will remain constant at about 9.8 m/sec2), unless air resistance becomes significant.
As an object rises WITH air resistance, the acceleration is larger in size than g, because both gravity and air resistance will be causing a downward acceleration. As the object FALLS with air resistance, the acceleration will be smaller in size than g, because gravity and resistance will be opposing each other. Because of the smaller acceleration being applied over the same distance, the return speed will be slower than the launch speed.
Yes, if it reaches terminal velocity, which is a constant velocity. When terminal velocity is reached, the downward gravitational force is equal to the upward force of air resistance, and the object no longer accelerates.
Air resistance
It doesn't matter whether the object is a basketball or something else. If there is no air resistance, the acceleration due to gravity is 9.8 meters/second2, in the downward direction.
a constant horizontal speed
Mass is the amount of matter in an object. It does not change based on gravity. Weight is the force an object exerts 'downward' due to gravitational acceleration. Force = (mass)*(acceleration). Acceleration due to gravity is less on the Moon than on Earth.
The magnitude of the velocity will increase. The velocity will be downward - and since it increases, the acceleration will be downward. The acceleration doesn't change (it will remain constant at about 9.8 m/sec2), unless air resistance becomes significant.
It reduces the acceleration of the falling object due to friction.
Mass is defined as resistance to acceleration, so one could measure how much force is needed to accelerate the object.
As an object rises WITH air resistance, the acceleration is larger in size than g, because both gravity and air resistance will be causing a downward acceleration. As the object FALLS with air resistance, the acceleration will be smaller in size than g, because gravity and resistance will be opposing each other. Because of the smaller acceleration being applied over the same distance, the return speed will be slower than the launch speed.
The acceleration of a falling object is called gravity. A free-falling object has an acceleration of 9.8 m/s/s when going downward on Earth.
Gravity is different on the earth than it is on the moon. An object will weigh more on Earth since there is more gravitational pull on the object. However, mass isn't dependent on gravity, and in physics, the formula for Weight is W = ma. This means weight is dependent on the acceleration that an object has in a downward direction, and in this case, we would be focusing on gravitational acceleration that is applied to the object.
Gravitational acceleration is always g = 9.8
The mass of the object the force is acting on, and the gravitational acceleration where the force is acting. F = m*g, where F is the gravitational force, m is the mass of the object and g is the gravitational acceleration (on Earth it is about 9.81ms-2)
Both objects would eventually reach terminal velocity which means they would both fall at the same speed.- But - compared to the falling object, the downward acceleration of a thrown object is the same.