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12 questions
How can you determine the speed of a moving train?
Divide the distance traveled by the time spent moving.
Divide the time spent moving by the direction traveled.
Multiply the distance traveled by the time spent moving.
Multiply the kinetic energy by the distance traveled.
An object that is sitting still has_________forces acting on it.
Balanced forces
Unbalanced forces
A boy pushes on a box and moves it across the room. This is an example of _____.
balanced forces
unbalanced forces
potential energy
chemical energy
Objects in motion tend to stay in motion because of the property of:
Gravity
Inertia
1. The distance traveled in an amount of time is called
Speed
Distance
Direction
Position
describes when a moving object speeds up.
Velocity
acceleration
What causes heat when rubbing your hands together?
Friction
Gravity
The________energy of a roller coaster is the energy of its motion.
Kinetic
Potential
1. A change in position over time is called _____.
reference
motion
shift
orientation
Suppose you are riding a bike. As you increase speed, your ____________
energy of motion increases
energy of motion decreases
stored energy increases
energy is used up
If the amount of kinetic energy an object has _____________, then the object will move faster.
Decreased
Increased
The energy of motion is ___________
determined by an object's position above a surface
increased as your speed decreases
decreased as your velocity increases
not determined by an object's position above a surface
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