forces
Forces that act only when one object touches another object
contact forces
What is the motion of a car driven 5 miles from home to school?
distance
An example of a living thing that does work is wind. True or false?
false
forces that act between objects that are not touching
noncontact forces
What pattern of motion is the opening and closing of an ice cream carton?
up and down
What kind of force makes a rolling ball on the ground stop? (contact/ noncontact)
contact force
What is the motion of a car making a left turn?
direction
When force moves something, what is done?
work
two forces that are equal in strength and opposite in direction.
balanced forces
you can predict the pattern of motion for windshield wipers to be ?
back and forth
WHat kind of force pulls a kicked ball to the ground? (contact/noncontact)
noncontact
What is the motion of a car moving very fast?
speed
Dad is pushing the lawnmower as it cuts the grass. What nonliving thing is doing the work?
machine: lawn mower
rotation and revolution
A student is sliding across the gym floor in socks. What does this tell you about balanced and unbalanced forces?
The forces are unequal in strength, so there is motion. Therefore the forces are unbalanced.
Why do force motion and speed work together?
Because God designed them to work together.
Why can some motions not be predicted?
Because there is no pattern of motion/
Give an example of how I can use forces to do work better.
I can use a path with less friction when pulling a wagon.
What is the place where something is?
position
Why should we learn about balanced and unbalanced forces?
God created force. Knowing about forces helps us know what kind of force to use to move heavy objects, or how to create friction to prevent slipping.
Tell an equation for a dog pulling his owner with 25 pounds of force and the owner pulling back with 10 pounds of force.
10<25
What pattern of motion is the sound from a police officer's walkie talkie?
an unseen pattern of motion
Sadie watches the dog digging a hole. What living thing is doing work?
animal-the dog
What is work?
It is done when a force moves something.
Explain why you know that forces began at Creation?
God created day and night. For day and night to occur, the earth must rotate. Rotation and revolution are examples of forces.