Motion Commotion
Acceleration and Momentum
Forces Affecting Motion
Forces Around Us
Laws
100
Another object that appears to stay in place
What is a reference point?
100
The rate of change in speed or direction or both
What is acceleration?
100
An inelastic collision conserves this
What is energy?
100
This decreases friction
What is a smooth surface?
100
Any object that is at rest remains at rest
What is the law of inertia - Newton's first law
200
The formula for speed
What is speed = distance/time?
200
If a Creature Cat’s Ferrari, with an initial speed of 10 m/s, accelerates at a rate of 50 m/s for 3 seconds, what will its final speed be?
What is 13.34 m/s
200
An elastic collision conserves these
What is energy and momentum
200
The force with which you pull to keep it going in a circle
What is centripetal force?
200
Force = mass times acceleration
What is Newton's second law of motion
300
The speed at any given moment
What is instantaneous speed?
300
Draw a graph with negative acceleration
What is (picture)
300
The combination of all the forces acting on an object
What is net force?
300
The force that acts between electrically charged objects
What is electrical force?
300
All masses attract each other?
What is the law of universal gravitation?
400
The formula for velocity
What is displacement over time?
400
The force an object has due to its motion
What is momentum?
400
When unequal forces act in opposite directions
What is unbalanced force?
400
An attraction or repulsion exerted on moving electrical charges and on certain metals such as iron and nickel.
What is magnetic force?
400
A force of attraction between objects due to their masses?
What is Gravity?
500
Jane drives at an average speed of 45 mph on a journey of 135 miles. How long does the journey take?
What is 3 hours
500
Which has higher momentum - a 0.058 kg tennis ball traveling at 40 m/s or a 0.62 kg basketball traveling at 4.4 m/s?
What is a basketball?
500
The difference between contact forces and noncontact forces
What is forces made by touch and forces made by a distance without a physical connection
500
Differences between sliding, rolling, and fluid friction?
What is sliding - two surfaces rub against each other rolling - object rolls on a surface fluid - motion of an object in a fluid
500
What net force is required to accelerate a car at a rate of 2 m/s2 if the car has a mass of 3,000 kg?
What is 6000 N
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