Show:
Force Basics
Free Body Diagrams
Labs and Momentum
Newton's Laws
Potpourri
100
This is known as a push or a pull.
What is a force
100
If an object is accelerating in one direction, we should be able to see what on a free body diagram?
What is unbalanced forces, or lines on one side that are longer than the others, otherwise known as a net force.
100
You are ridding in a car and it takes a sudden left. Your body leans in which direction?
What is the right.
100
An object that is in motion tends to stay in motion is nicknamed the law of what?
What is the Law of Inertia.
100
The SI unit for force is know as what?
What is the Newton.
200
These type of forces are equal in magnitude resulting in no acceleration
What is a balanced force
200
When an object sits on a table, it is being pulled down due to the force of gravity. The object doesn't accelerate to the ground due to which force?
What is the Normal Force.
200
If you swing a pedulum from 20 cm high and it moves a milk carton 15 cm, what will happen to the milk carton when you swing the pendulum from 30 cm?
What is it will move further than 15 cm.
200
A tank moves a lot slower than a car due to which of Newton's Laws?
What is Newton's Second Law.
200
Two hockey players get into a fight and push eachother while in the rink. The lighter player moves away faster due to which of Newton's Laws?
What is Newton's Second Law.
300
These types of forces are unequal in magnitude and therefore have a net acceleration.
What is an unbalanced force.
300
What is the significance of a free body diagram?
What is so we can visually analyze and understand a problem.
300
What are the 2 ways we can find the weight of an object?
What is spring scale or calculate it using the formula W=m*g
300
Luke's land speeder with a mass of 2050 kg accelerates from rest to 200 m/s/s. What is the force needed to do this and does he make it to Alderaan?
What is 410,000 N and no, Alderaan was destroyed by the death star and the dark side of the force.
300
If an astronaut has a mass of 175 kg, what is his weight on Earth where the acceleration due to gravity is roughly 10 m/s/s
What is 1750 N
400
True or False. A net acceleration of zero means the object is not moving.
What is False. It indicates an acceleration of zero, meaning no change in speed.
400
Draw a free body diagram of the following. A caveman just invented the wheel but needs to move it. The wheel has a weight of 5400 N, and he is applying a force of 2600 N to the right. The frictional force that the dirt is opposing his push is 900 N.
Picture answer. Must have: Fg, Fn, Fa, and Ff.
400
True or False. The average person has a reaction time quick enough to react to a car crash.
What is false.
400
Seatbelts save us from going through a windshield due to which of Newton's Laws?
What is Newtons First Law.
400
What is the momentum of a football player with the mass of 91 kg moving at 10 m/s?
What is 910 kg*m/s
500
When the same unbalanced force is applied to two objects, the object with what component that is smaller will have the greater acceleration?
What is the smaller mass. Since F=ma, and both forces are equal, whoever has the smaller mass has the greater acceleration.
500
Long after jumping out of a plane, James Bond has been free falling for a while. He has a mass of 132.6 kg and is currently experiencing an air friction (drag force) of 1300 N. Has he reached terminal velocity?
What is yes, he has.
500
True or False. Momentum is always conserved in real life, which is why we have the law of conservation of momentum.
What is False. We use the law of conservation of momentum, but momentum can be gained or lost, which is known as an impulse or change in momentum.
500
When you shoot a cannonball at 150 m/s at an angle of 35 degrees above the horizontal, the cannon recoils due to which of Newton's Laws?
What is Newton's Third Law.
500
Which two things would cause an increase in a gravitational force?
What is moving the objects closer together or increasing the objects mass.