Newton's first law of motion is often stated as
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. (Unbalanced force here being the brake force applied to the train's wheels and the friction between the wheels and the tracks/grade.)
The stopping distance of that object is directly proportional to it's mass. The greater the mass, the greater the inertia. (resistance of an object to change it's present state) and momentum (weight times velocity). The faster it's going-the longer distance it needs to stop.
As a cyclist goes faster, the force of friction remains relatively constant. The force of friction between the tires and the road depends on the coefficient of friction and the normal force, which do not change significantly with speed.
To give an object a greater acceleration, you can either apply a greater force on the object or reduce its mass. Increasing the force acting on the object will accelerate it more, while reducing its mass will also result in a greater acceleration for the same force applied.
Only if it goes faster and faster. Otherwise, if you have to push all the time and it maintains its speed, that means that the force of the pushing is balanced by other forces, usually friction.
The additional force needed to bring the car into equilibrium would be equal in magnitude and opposite in direction to the force that was providing the constant velocity. This force is the force of friction that acts to oppose the motion of the car.
the more force u put on an object the faster it goes 4 example, if a little girl pushes a wagon with a bolder in it it wont go the far but if a full grow man pushed it it would go father because there will b more force.
Because it has more momentum the faster it goes.
As a cyclist goes faster, the force of friction remains relatively constant. The force of friction between the tires and the road depends on the coefficient of friction and the normal force, which do not change significantly with speed.
goes faster
The resistance is greater the faster the vehicle is going.
It sure can. A machine as simple as a lever can produce an output force that is greater than the input force. Perhaps you are confusing "force" with "energy"?
it goes faster i assume.
As worded, the question doesn't mean much. I think you want to compare thegravitational force on an object with the buoyant force on the same object whenit's in a fluid.As long as the gravitational force is greater than the buoyant force, the objectmust keep accelerating downward ... sinking further and faster, and displacingmore fluid as it goes. If it ever displaces enough fluid for the buoyant force toequal the gravitational force on it (its 'weight'), then it stops sinking, and floatsright there.
To give an object a greater acceleration, you can either apply a greater force on the object or reduce its mass. Increasing the force acting on the object will accelerate it more, while reducing its mass will also result in a greater acceleration for the same force applied.
acceleration = force / mass
The Air Force admits to 1,500 mph, -personally I think it may be faster than that.
The scenario described relates to Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. A pitched baseball is thrown with greater force than a gently thrown one, resulting in a higher acceleration and, consequently, a faster speed. This illustrates how the amount of force applied affects the motion of an object.
Only if it goes faster and faster. Otherwise, if you have to push all the time and it maintains its speed, that means that the force of the pushing is balanced by other forces, usually friction.