What is the unit for force?
What are the units for energy?
Weight is the same thing as mass.
The coefficient of friction is measured in________________.
There are no units!
When you double the speed of the object you double its_____________________
145.000 has_______significant figures
The graph displays an objects position vs. time. During what time interval does the object have an acceleration?
The graph displays an objects position vs. time. During what time interval is the object not moving?
When does the object have a constant negative velocity?
Momentum is always conserved for a single object.
Total kinetic energy is always conserved for inelastic collisions.
Total kinetic energy is conserved during elastic collisions.
What determines the force of static friction acting on an object? (check all that apply)
The coefficient of friction between the surfaces.
The normal force of the surface
The speed of the object
The energy of the object
When an projectile reaches its peak flight its___________________________. (check more than one box)
Velocity is 0m/s
Acceleration is 0m/s/s
Vertical Velocity is 0m/s
Horizontal Velocity is 0m/s
Acceleration is -9.81m/s/s
Force is 0N
When an object is accelerating we can use the d=rt formula to solve problems involving that object.
A projectiles vertical speed is constant (assuming no air resistance).
A projectile's horizontal speed (assuming no air resistance) is constant.
If the Earth somehow were to shrink to half of its size (but kept the same mass), what would happen to our weight (think universal law of gravity)
It would double
It would be cut in half
It would quadruple
It would be 1/4 the original
Centripetal acceleration acts _____________________.
Tangent to the circular path.
Away from the center
To the center
Along the path of the object in motion
Linear speed of a rotating object acts____________________.
To the center of motion.
Away from the center of motion
Tangential to the circular path
Along the circular path