Vocabulary
What is the distance traveled in an amount of time?
Speed
Benjamin is the pitcher on a baseball team. What force causes the baseball to change direction when it is hit by the bat?
Benjamins force on the ball with the bat.
What is energy in motion?
Kinetic Energy
What is a collision?
Two objects strike each other with force.
What is evidence that a bowling ball has more energy when it is moving faster than when it is moving slower?
The bowling ball will knock over more pins when it is moving faster.
What is inertia?
When an object is in motion, it stays in motion. When an object is still, it stays still.
If two puppies pull on a toy with equal force and the toy does not move, this is an example of _______
What is stored energy?
Potential Energy
Give an example of a collision.
Student Response
How can you calculate speed?
Distance divided by time.
What is motion?
Moving, when there is a change in an objects position.
If two puppies pull on a plastic ring with equal force, the ring does not move. This is an example of ____ forces.
Balanced
How can you increase the potential energy of an object?
Increase the height of the object.
A rolling toy car hits a ball that is not moving. The toy car stops moving, and the ball bounces away. What happens to the energy during the crash?
a. The energy from the toy car is destroyed.
b. The energy from the toy car transfers to the ball.
c. The ball transfers energy to the toy car.
d. The ball creates its own energy.
B
What energy transfer occur when you are hammering a nail into the ball?
Kinetic energy will be transferred from the hammer to the nail, causing the nail to move.
What is velocity?
The speed and direction of an object.
Dana is the pitcher for her community baseball team. What force causes the baseball to change direction when it is hit by the bat?
a. The catchers force on the ball with his mitt.
b. The batters force on the bat as he misses the ball.
c. The pitchers force on the ball as he throws.
d. The batters force on the ball with the bat.
D
Heat is produced by friction when you rub your hands together. How can you increase the amount of heat produced?
Increase the speed that you are rubbing your hands together.
When a ball rolls down a ramp and hits a stationary toy car, the car moves forward. What energy transfer is happening?
a. Light energy is transferring to motion energy
b. Motion energy is transferring from the ball to the car
c. Heat energy is transferring to electrical energy
d. Sound energy is transferring to motion energy
B
How could you make a ball roll down a ramp faster?
Make the ramp higher.
What is friction?
Friction is a force that resists motion between two surfaces that rub against one another. It can create heat.
What is an unbalanced force?
A push or pull that changes an objects motion.
If you increase the speed, what will happen to the energy?
It will increase.
How could you make a wrecking ball knock down a building in one swing?
a. Swing it faster
b. Swing it slower
A
Which is not an example of a collision causing energy transfer to change in motion?
a. a bat strikes a baseball
b. a catcher catches a baseball
c. a baseball hits the ground
d. a baseball flies through the air
D.