QUIZ 1
Disregarding air resistance, objects fall at constant:
Acceleration
If the mass of an object does not change, a constant net force on the object produces constant:
Acceleration
When an object falls through air, its velocity increases and its acceleration:
Decreases
An object in motion comes to a stop without any external force.
False
Force is always expressed as a push but not as a pull.
False
In a circular orbit satellites, the PE and KE are the same at all points
False
The horizontal motion of a projectile depends on the vertical motion.
False
When acceleration is "g", it is a free-fall.
False
The resistive force that opposes the motion or attempted motion of an object is called:
Friction
Your weight is:
The gravitational attraction between you and Earth
Every object possesses inertia
True
Force of interaction indicates that when you push an object, the object will pull you.
True
The escape speed from Earth is 11.2km/hr
True
The horizontal speed of a projectile is constant because gravity has no influence on it
True
The sum of the PE and KE are always the same.
True
The property which specifies the speed and direction of motion of an object is called.
Velocity
The force due to gravity is called:
Weight
Whenever the net force on an object is zero, its acceleration is:
Zero
A moving object has:
all of these
As an object freely falls, its:
velocity increases