Not all moving objects accelerate. In general, an object will accelerate if there is a net force acting on it. For a ball in the air, this might be gravitation + air resistance; for a moving car (once you turn the engine off) it might be the force of friction; etc.
If the net force on a body is zero, then the body will not accelerate ... its speed and direction of motion won't change. If it was moving a second ago, then it will continue moving at the same speed and in the same direction. If it was not moving a second ago, it won't start moving.
No, it is not harder to accelerate a moving object. The initial motion of the object does not affect the force required to accelerate it further. The force required to accelerate an object depends on its mass and the desired acceleration.
Yes, a magnetic field can accelerate a moving charge through a force known as the Lorentz force.
A non-moving object in equilibrium does not accelerate or change velocity. It remains stationary and experiences no net force acting on it.
A body is moving at constant velocity including zero at Equilibrium Condition, No change of energy or zero force. With force a body can accelerate, move with increasing velocity.
No, it takes the same force to accelerate a moving object as it does to accelerate a stationary object, according to Newton's first law of motion. The force required depends on the mass of the object and the desired acceleration.
Forces can change the way the body is moving. Speed it up, slow it down, change its direction.. it depends if the body is in equilibrium or not and what forces are already in play
Whenever there is a resultant force acting on a body which is having some mass, then that body will accelerate (or) A body whose velocity is changing with respect to time and having some mass then the body will accelerate.
To come to rest, its velocity must change, therefore it will accelerate. Once it is at rest, if it remains at rest, it will no longer accelerate, i.e., its acceleration will be zero.
If the acceleration of a body is greater than the acceleration due to gravity, the body will start moving upward against the force of gravity. It may continue to accelerate if the net force acting on the body is greater than the force of gravity.
The body will move in the direction of the net force, which is the combination of all the individual forces acting on the body. If the net force is greater in one direction, the body will accelerate in that direction.
A person stomping on the gas pedal of a moving car.