Force, Motion, and Energy
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Force, Motion, and Energy 2
Force, Motion, and Energy 3
Force, Motion, and Energy 4
Force, Motion, and Energy 5
100
A person pushes a box. What is the push most likely to change?
the position
100
A bicyclist rides on a flat road and then stops pedaling but does not apply the brakes. The bicycle stops because of -
friction or resistance
100
This is a push or a pull.
a force
100
Name a surface that does not produce a lot of friction.
ice, slick floors, etc.
100
What is energy?
the ability to do work
200
A student throws a ball. What type of energy does a moving ball have ?
kinetic energy
200
How do you calculate speed?
distance divided by time
200
How do forces act upon objects?
stop objects, start objects moving, change the direction of an object
200
You want to conduct an experiment with a simple machine. First, you make an inclined plane by placing a book under one end of a ruler. Next, you will place a marble in the groove of the ruler at the top of the incline. Then, you will release the marble and measure the distance it travels. How could you increase the distance traveled by the marble?
increasing the height of the book
200
What is the definition of acceleration?
change in velocity
300
Energy cannot be destroyed. What can it do?
Change forms (be transferred)
300
If friction is present, what two things happen when an object is moving?
object will slow down and heat is created
300
Objects in motion stay in motion, objects at rest stay at -
rest
300
Kinetic energy allows you to -
move
300
Name two ways the velocity of an object can change.
increase/decrease in speed, or change direction
400
A book on a shelf has what type of energy?
potential energy (potential to fall)
400
An elephant and a lion are both moving with a speed of 5 m/s. Which animal has more kinetic energy?
the elephant
400
Larger objects need more force to move them is an example of what law of motion?
2nd law
400
Name an example of kinetic energy.
Answers will vary.
400
What is the difference between speed and velocity?
speed is the measure of motion or how fast/slow you are moving and velocity is speed in a direction
500
A 20kg rock accelerates to 5 m/s2. What is the magnitude (calculate force) of the force that caused this motion?
100N
500
Friction creates -
heat
500
This position is when the ball has the greatest amount of kinetic energy.
What is position D?
500
Name an example of potential energy.
Answers will vary.
500
What do you need to apply to an object to make it move?
an unbalanced force