Force and Motion 2
What are two examples of forces?
Art and Music
A push or pull
A stand or ground
The dark side and the light side
A push or pull
What pulls a ball back to earth?
Gas
Gravity
Friction
Molecules
Gravity
Friction is greater when the two surfaces are ________________.
rough
What force moves an object away from you?
pull
push
gravity
Jedi force
push
Which word means a change in position?
Speed
Motion
Direction
Force
Motion
Which material should be used on a bicycle ramp to increase friction?
shiny metal
rough paper
smooth wood
rough paper
The force that acts directly against the direction of motion.
What is friction?
Pushes and pulls are examples of...
forces
stretches
twists
kicks
forces
Is kicking a soccer ball a push or a pull?
push
pull
push
how do we measure force?
spring balance
What describes how fast an object is moving?
Speed
Which object would require the most force to move?
a tennis ball
a baby
a car
a cell phone
car
Which surface would be easier to roller-skate on?
The blacktop or the inside of the classroom.
The classroom because the floor will have less friction?
The force that opposes the motion of an object?
What is friction?
Objects in motion tend to stay in motion and objects at rest remain at rest unless......
Unless acted on by a force,