The acceleration of an object in a moving lift is dependent on the direction of the lift's motion. If the lift is moving upwards, the acceleration of the object will be greater than if the lift is moving downwards. This is because the object is experiencing the force of the lift's motion in addition to the force of gravity.
The acceleration of an object in a moving lift is not constant, as it depends on the lift's motion. However, if the lift is moving at a constant speed, the acceleration of the object will be the same as if the object were in free fall. This is because in both cases, the only force acting on the object is gravity.
The acceleration of an object in a moving lift is affected by the direction and speed of the lift's motion, as well as the mass of the object and the force of gravity. The angle of the lift's motion and the presence of other forces, such as air resistance, can also affect the acceleration of the object.
No, an object cannot accelerate in a lift that is not moving. In order for an object to accelerate, there must be a net force acting on it. In a stationary lift, the only force acting on the object is gravity, which causes it to experience a constant acceleration of 9.8 m/s^2 towards the ground.
If the lift changes direction, the acceleration of the object will also change. When the lift is accelerating or decelerating, the object will experience a greater or lesser acceleration, respectively, depending on the direction of the lift's motion. If the lift is changing direction but maintaining a constant speed, the acceleration of the object will be zero, as the forces acting on the object are balanced.