The form the friction that exists between a sidewalk and bike tires
What is rolling friction
100
Objects with a greater __________ have a stronger force of gravity between them
What is mass
100
F = M x A
What is 2nd Law
100
The force you would need to make a 10kg dog accelerate at 2 m/s/s.
What is 20 N
100
Definition of force
What is a push or a pull
200
The following is an example of when you want as little friction as possible:
A. Driving a car on snowy roads
B. Walking across the room
C. Wearing cleats on soccer shoes
D. Olympic ice skaters performing tricks
What is D
200
How strongly gravity pulls your mass towards Earth
What is weight
200
Inertia
What is 1st Law
200
How fast would a 1.5 kg football accelerate if it is thrown with a force of 45 N?
What is 30 m/s/s
200
The SI unit for measuring Force
What is N (Newton)
300
The definition of friction.
What is when two surfaces rub together and prevents or slows motion?
300
The law that says everything that has mass is attracted to everything else that has mass
What is Law of Universal Gravitation
300
Luggage in the back of an SUV rolls forward when the car suddenly stops
What is 1st Law
300
The net force (calculate strength and direction) of a boat that is pulled 1250 N downstream by a rivers current and 250 N upstream by a tugboat.
What is 1000 N downstream
300
The combined total of all forces acting on an object
What is net force
400
True or False. Using snow tires on an icy road is an example of increasing friction.
What is True
400
How you decrease the strength of gravity between two objects of mass.
What is increase distance
400
A brick sits on a table until you push it
What is 1st Law
400
The speed of a skydiver 3 seconds after they jump out of a plane
(ignore air resistance)
What is 29.43 m/s
400
A spring scale measures this
What is weight
500
In which scenario is friction the most helpful?
A. A person sliding down a water slide
B. An olympic swimmer during a race
C. Driving a car down a snowy road
D. An airplane flying
What is C
500
If we didn't have an atmosphere (air resistance), all objects on Earth would fall with this acceleration.....
What is 9.81 m/s/s
(9.81m/s2)
500
A basketball bounces off the gym floor
What is 3rd Law
500
The amount of momentum Mrs. Reeds car (which has a mass of 4,000kg) when she speeds at 35 m/s (equivalent to 80 mph) down the highway.