Motion and Force
A push or a pull
What is force?
(Final speed - Initial speed)/time
What is the formula for acceleration ?
You are pushed to the back of your seat when an airplane takes off
What is an example of Newton's 1st Law?
Superman is lifting a 1000 N train a distance of 25 meters. The amount of work he did is _______________.
What is 25,0000 N-m or J?
A cross-country runner runs 4 km in 15 minutes. The runner's speed is
What is 0.27 km/m?
A change in position when compared to another object
What is motion?
The average velocity of a train traveling north that covers 80 km in 1 h, 200 km in 2 h, and 420 km in 4 h
What is 100 km/h north?
Resistance to change in motion
What is inertia?
The amount of work being done to push a 12 N watermelon out a window for a 15 m drop is _________________.
What is 180 N-m or J?
The amount of force required to accelerate a 10 kg object to 2 m/s2
What is 20 N?
The SI unit for the strength of a force
What is a Newton (N)
A woman is taking a walk, moving at a rate of 80m/min. If she travels in a straight line, where will she be in 4 minutes?
What is 320 m away?
It takes more force to move a bowling ball than a baseball
What is an example of Newton's 2nd Law?
A truck has done work consisting of 1000 J. It has done this work over a distance of 20 m. The force used is _________________.
What is 50 N ?
Calculating the slope of this line will tell us the object's
What is speed?
A contact force that two surfaces exert on each other when they rub against each other
What is friction?
A change in speed, direction, or both
What is acceleration?
The air is let out of a balloon and it flies around the room
What is an example of Newton's 3rd Law?
A car does work of 3900 J in a period of 33 s. The power it uses is ___________________.
What is 118 W?
Car traveling at 15 m/s starts to decelerate steadily and comes to a complete stop at 10 seconds. It's acceleration is.....
What is 1.5m/s2 ?
A non-contact force that pulls objects toward each other as a result of their masses
What is gravity?
These variables could be plotted on a graph to show the acceleration of an object
What is velocity vs. time?
A magician pulls out the tablecloth from under the dishes and they do not move
What is an example of Newton's 1st Law?
The amount of power a train uses if it does 6240 J of work in 40 seconds is ____________________.
What is 156 W?
Time it will take a car to accelerate from 15.2 m/s to 23.5 m/s if the car has an average acceleration of 3.2m/s2
What is 2.59 seconds?