What is a PUSH or PULL of an object?
Motion
Force
Friction
Gravity
Force
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
If these boys are pulling with the same amount of force. What will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
Both will fall down.
They will not move at all.
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.
friction
Pushes and pulls are examples of...
forces
stretches
twists
kicks
forces
Which of the following statements are true?
Balanced forces cause a change in motion.
Unbalanced forces cause a change in motion.
Forces do not effect the change in motion.
Unbalanced forces cause a change in motion.
Is kicking a soccer ball a push or a pull?
push
pull
push
When an object changes its path of motion, it changes _____________.
speed
force
direction
direction
how do we measure force?
spring balance
What describes how fast an object is moving?
Speed
What is a push or pull exerted on an object in order to change the objects position.
What is Force?
Which of type of energy is created by friction?
heat
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?
friction
Is gravity a push or a pull?
push
pull
neither
both
pull
What is cgs unit of Force?
dyne
A change in a moving object's speed or direction is...
acceleration
Objects in motion tend to stay in motion and objects at rest remain at rest unless......
Unless acted on by a force
What is the relationship between Newton and dyne?
1 N=105 dynes
What is SI unit of Force?
Newton (N)
More the weight, __________ the friction force.
Greater
Combined forces that act upon an object is ?
Net force
What is described as an object's direction and speed?
motion
In force a scalar or a vector quantity?
Vector