Newton
This law states that objects tend to resist a change in motion.
What is Newton's First Law of Motion/Law of Inertia?
This force works against the direction of motion when two surfaces are in contact with one another.
What is friction?
If you are pushing an object north with a force of 28 N and your friend is pushing the same object south with a force of 19 N, what is the net force and in what direction will the object move?
What is 9 N to the north?
A 1,000 kg car is moving at a velocity of 51 m/s. What is its momentum?
What is 51,000 kgm/s?
As objects move farther apart, the force of gravity between them does this.
What is decreases?
This equation sums up Newton’s Second Law of Motion
What is force = mass x acceleration?
A penguin swimming is working against this type of friction.
What is fluid friction?
If an elevator can hold a maximum capacity of 9500 N, and the average person has a mass of 78 kg, how many people can the elevator safely hold?
What are 12 people?
If a 3 kg falcon dives with a velocity of 135 m/s, what is its momentum?
What is 405 kgm/s?
A force of attraction that exists between two objects due to their masses.
What is gravity?
This law of motion states that when an object exerts a force on another, the second object exerts a force of equal magnitude in the opposite direction.
What is Newton's Third Law of Motion?
Ball-bearings are this type of friction.
What is rolling friction?
If you are pushing north with a force of 31 N and your friend is pulling north with a force of 25 N, what is the net force on the object?
What is 56 N to the north?
A 5,000 kg truck is moving at a velocity of 12 m/s. What is its momentum?
What is 60,000 kgm/s?
As the mass between two objects increases, gravity does this.
What is increases?
This law of motion states that the acceleration of an object is dependent upon the mass of the object and the force acting on it.
What is Newton's Second Law of Motion?
The tendency of a bookcase sitting on the floor not wanting to move when a small force is applied to it is this type of friction.
What is static friction?
What minimum amount of force would need to be applied to lift an object with a mass of 100 kg?
What is 980 N?
You drop a penny off the top of the Empire State Building. After 9.5 s it hits the ground. What is the height of the Empire State Building?
What is 442 m?
The force of gravity on the moon is 1/6 that of Earth’s. How much does a 100kg astronaut weigh on the moon.
What is 163.3 N.
1 Newton is equal to this.
What is 1 kgm/s2?
Name two ways to increase friction.
What is increase the pressure between the surfaces and make the surfaces rougher?
You are building a bridge that needs to be strong enough to hold 250,000 N. Assuming the average mass of a car is 1,000 kg, how many cars could this bridge safely hold?
What is 25 cars?
If a 12,500 kg boulder falls off a cliff, what is its momentum if it hits the ground after 4.5 seconds?
What is 551,250 kgm/s?
What force is required to stop a 1,000 kg car moving at 60 m/s in 4 seconds?
What is 15,000 N?