All About the 2nd Law
Comparisons
Pressure
Working It Out
Working It Out 2
100
Makes an object accelerate
What are unbalanced forces?
100
This describes net force and acceleration when mass is equal
What is directly proportional?
100
Force per area
What is pressure?
100
When an object reaches terminal velocity its acceleration is this
What is zero meters per second squared?
100
A tow truck exerts a force of 2000N on a car, accelerating it at 1 m/s/s. This is the mass of the car.
What is 2000kg?
200
This equation can be used to represent Newton's Second Law
What is F=ma, A=F/m, or m=F/a
200
This describes mass and acceleration when force is equal.
What is inversely proportional?
200
This is the unit of pressure
What is pascal or newtons per square meter?
200
Suppose the force of friction on a sliding object is 25N. This is the force needed to maintain a constant velocity
What is 25N?
200
You pull horizontally on a 50kg crate with a force of 450N and the friction force on the crate is 250N. This is the acceleration of the crate.
What is 4 meters per second squared?
300
This is the unit used for acceleration when using Newton's Second Law
What is meters per second squared?
300
If a tennis ball and a solid steel ball with the same diameter are dropped at the same time. In the absence of air resistance, which ball has greater acceleration?
What is neither?
300
Of the following women, which would exert the most pressure: woman standing in running shoes woman standing on skis woman standing in high heels
What is woman standing in high heels?
300
A block weighs 10N. This is the net force on the book when held at rest in your hands
What is 0N?
300
This is the force needed to accelerate a 4kg physics book to an acceleration of 2 meters per second squared.
What is 8N?
400
This is the unit used to measure force
What is Newton?
400
When the force on an object doubles, this is what happens to its acceleration
What is it doubles?
400
Does standing up or lying down exert more pressure on the ground?
What is standing up?
400
A girl pulls a 100kg wagon with a constant force of 50N. This is the wagon's acceleration
What is 0.5 meters per second squared?
400
A 10N falling object encounters 10N of air resistance. This is the magnitude of the net force on the object.
What is 0N?
500
This is the unit used to measure mass when using the equation to represent Newton's Second Law
What is kg?
500
If the mass of a cart doubles, this is what happens to its acceleration
What is it halves?
500
If you are being hit with a board of nails, would you rather have more nails or fewer nails in the board? In 4 words or less, why?
What is more? Decrease in pressure?
500
A 20N falling object encounters 4N of air resistance. This is the magnitude of the net force acting on the object.
What is 16N?
500
If car A has ten times more mass in it than car B and the two cars are pushed with equal forces, this is the acceleration of car A compared to car B.
What is 1/10?