Define it
Force
A push or a pull
The force pulls an object toward another object
gravity
If two objects travel the exact same distance, but Object A takes less time than Object B, which object was moving faster
Object A
If you want to test how different surfaces affect a toy car's speed, I am what you should change in your experiment.How can you increase or decrease friction?
The force that pulls a basketball back down to the ground when you shoot it toward the hoop
gravity
Momentum
The strength of something when it is moving.
If you travel to the Moon, I stay the same while your weight decreases.
mass
On Surface A, the car travels 150 centimeters.On Surface B, the car travels 65 centimeters.
What is probably true about surface B?
It has more friction
When you throw a baseball and a bowling ball with the exact same amount of force, this ball will travel farther
the baseball = less mass
A push or a pull that can cause an object to change its speed, direction, or shape
force
What is friction?
A force that slows something down an object
I am a special force that slows objects down in the air
air resistance
Adding oil or wax to a surface does this to friction.
Decreases it
Pushing a heavy box across a floor requires more force than pushing a light box because the heavy box has more of this.
mass
Sliding across ice is easy because smooth ice creates very little of this stopping force
friction
Fluid friction?
objects moving through liquid or gas
I slow items down
friction
A truck, a car, and a train are traveling at the same speed. They all break at the same time. Which will take longer to stop?
A train! Why? more MASS = more momentum!
If two people push a stalled car from opposite sides with equal force, the car will not move because the forces are this
balanced!
An object is considered to be in this state whenever its position changes over time
motion
2 forces acting in EQUAL and OPPOSITE directions
I am a force that keeps an object in the same spot
balanced force (equal and opposite causes no motion)
A runner completes a 12-kilometer race in 3 hours. How far do they run in 1 hour?
4 Kilometers per hour
To increase the speed of a wagon without changing its mass, you must apply more of this
force!
A heavy bowling ball is much harder to stop than a lightweight tennis ball rolling at the same speed because it has more _______
momentum