Reading Forces
A book rests motionless on a table. This is the net force on the book.
What is 0 Newtons?
A basketball is falling straight down through the air.
One arrow pointing down labeled Fg.
A 3kg apple falls from a tree. This is the gravitational force acting on it.
What is 30 N?
Ignoring air resistance, this many forces act on a skidding car.
On a mac, this command closes an application that has frozen or stopped responding.
What is force quit?
A soccer ball travels straight up after being kicked. This is the direction of it's acceleration.
What is down?
A book rests motionless on a table.
Fg going down, FN going up, equal size arrows.
A 5 kg brick experiences a net force of 20 N to the right. This is its acceleration.
What is 4 m/s2?
When a car is skidding to the right, this is the direction of net force and acceleration.
What is left?
In cybersecurity, this is an attack that attempts every possible password combination until one works.
What is brute force?
A box slides to the left while experiencing a force of 40 N to the right, and 15 N to the left. This describes how its speed changes.
What is slowing down?
A box slides to the left across a rough floor after someone stops pushing it.
Balanced Fg and FN, with friction force to the right.
A 10 kg crate accelerates to the right at 3 m/s2. This is the net force acting on the crate.
What is 30 N to the right?
Between dry/wet pavement and good/worn tires, this combination gives the smallest amount of braking acceleration.
What is wet pavement with worn tires?
Filmmakers on Lord of the Rings used this technique involving camera angles to make the Hobbits appear much smaller than Gandalf.
What is forced perspective?
A ball reaches the highest point of its upward flight, and momentarily becomes motionless. This describes its net force.
What is a downward net force?
A person pushes a box to the right across a rough floor at a constant speed.
4 arrows, Fg and FN are balanced, Fpush and fk are balanced.
A 50 kg table experiences a friction force of 400 N. This is the coefficient of friction between the table and the floor.
What is 0.8?
The other forces balance out, meaning net force on a skidding car equals this force.
What is kinetic friction force?
In chess, this is the move your opponent must make when all of their other legal moves would results in a swift defeat.
What is a forced move?
Blocks A and B have the same mass. This block is the one with more acceleration.
What is both/neither?
An asteroid flying to the right through space.
No arrows.
A 20 kg sled has a coefficient of friction of 0.15 between itself and the snowy ground. This is the sled's acceleration as it coasts to the right along flat ground.
What is 1.5 m/s2 to the left?
Under the same conditions, between a lighter and a heavier car, this one will come to a stop first.
What is both cars? (they experience the same acceleration)
In this 2008 video game, you play as Darth Vader's secret apprentice, Starkiller.
What is Star Wars: The Force Unleashed?