Potential vs. Kinetic
Energy an object has because of its position.
Potential energy
Speed is how fast an object is ________.
Moving
Kinetic energy depends on mass and ________.
Speed
Two objects have the same mass. Which has more kinetic energy: the faster one or the slower one?
The faster one
What unit is used to measure kinetic energy?
Joules
Energy an object has because it is moving.
Kinetic energy
What is the equation used to calculate speed.
Speed = distance รท time
Which has more kinetic energy: a car or a dump truck moving at the same speed?
The dump truck
Two objects move at the same speed. Which has more kinetic energy?
The one with more mass
What unit is used to measure mass in the kinetic energy formula?
Kilograms
Name the two types of energy described in this unit.
Potential energy and kinetic energy
A car travels 300 miles in 4 hours. What information is needed to find speed?
Distance and time
If two objects have the same speed, which has more kinetic energy?
The object with more mass
An object with less mass is moving faster than one with more mass. How can you tell which has more kinetic energy?
Calculate kinetic energy using the formula
What unit is used to measure speed in the kinetic energy formula?
Meters per second
A student standing at the top of a slide has which type of energy?
Potential energy
Distance divided by time equals ________.
Speed
Which factor increases kinetic energy more: more mass or less mass?
More mass
Why can a fast-moving car have more kinetic energy than a slow-moving truck?
Because speed increases kinetic energy
Which has more kinetic energy: a 1,250 kg object at 30 m/s or a 12,500 kg object at 5 m/s?
The 1,250 kg object at 30 m/s
As a student slides down, what happens to potential and kinetic energy?
Potential energy decreases and kinetic energy increases
If distance stays the same, what happens to speed when time decreases?
Speed increases
True or False: Mass does not affect kinetic energy.
False
Explain how speed and mass work together to affect kinetic energy.
Increasing either mass or speed increases kinetic energy
Why must you calculate kinetic energy instead of just guessing in some situations?
Because mass and speed both affect kinetic energy