Newtons First Law

The force required to maintain an object at constant speed in free space is equal to

zero

What is the net force on an object moving at constant non-zero velocity

zero

A car moves at constant velocity, what additional force is needed to bring the car to equilibrium

zero

SI unit of force

newton (N)

the law of inertia applies to

moving and objects at rest

what is the tendency to maintain its state of motion

inertia

describe law of inertia or Newtons first law:

a object moving at constant velocity or at rest will continue to move/rest until acted upon an outside force and exits equilibrium.

net force on an object in equilibirium

zero

what causes a moving object to change direction

force

what causes a change in an objects motion

force

An object with constant speed has ___ acceleration

zero

An object with twice as much as another object has twice as much

inertia

Compared to its mass on Earth, the mass of a 10-kg object on the moon is

the same

If the force of gravity suddenly stopped acting on the planets, they would

move in a straight line tangent to their orbits