Basics
Which factors determine the amount of kinetic energy an object has?
mass and speed
Which statement about kinetic energy is true?
All moving objects have kinetic energy
Objects that are not moving have kinetic energy
Changes in mass have no effect on kinetic energy
Changes in speed have no effect on kinetic energy
All moving objects have kinetic energy
If a pitcher throws a ball twice as fast, how does this affect the ball's kinetic energy?
it quadruples.
_____________________ is The energy due to an object's motion.
kinetic energy
Which equation shows the relationship between kinetic energy (KE) and speed (V)?
KE ∝ V²
What type of relationship exists between mass and kinetic energy?
linear, proportional
When comparing two balls dropped from the same height into modeling clay, what causes one ball to make a larger dent?
the ball's mass
What causes the change in motion of a cup when hit by a marble?
the marble's kinetic energy
Which equation correctly represents the relationship between kinetic energy (KE) and mass (M)?
KE ∝ M
What happens to kinetic energy when mass increases?
in increases proportionally
How does kinetic energy relate to energy bars in the diagrams?
Fuller bars indicate more energy.
What type of relationship exists between speed and kinetic energy?
square, nonlinear
How does the speed of a baseball affect its kinetic energy?
Kinetic energy increases by the square of the speed
What happens to kinetic energy when comparing two identical softballs thrown at different speeds?
The faster softball has more kinetic energy.
When comparing a tennis ball and baseball moving at the same speed, which has more kinetic energy? WHy?
the baseball; the baseball has a greater mass