Newton's Laws
Who was Sir Isaac Newton?
A scientist who discovered 3 laws of motion.
How do you find the net force on an object?
Add all the forces if they are going in the same direction. Subtract the forces if they are going in opposite directions.
Who wrote the "Harry Potter" series?
J.K Rowling
The speed and direction of an object's motion
Velocity
List one example of a contact force and one example of a non contact force.
Answers may vary
Which law applies?
A hockey puck continues to slide along an ice rink after being pushed with an initial force of 50N.
Explain your reasoning.
Newton's 1st Law of Motion
The force that opposes the movement of an object is called ________
Friction
What planet did superman come from?
Krypton
An object or place that can be used to describe the location of another object
Reference Point
If you increase the mass of an object, its gravitational force ____________
Increases
A car accelerates at 10m/s^2. The force applied is 50 N. What is the mass of the car.(Remember your units)
5Kg
Think back to 7th grade: What are the 3 types of plate boundaries where tectonic activity occurs?
Convergent, Divergent and Transform.
What chemical element is diamond made of?
Carbon
Define: Acceleration
The change in speed and/or direction of an object's motion
What is the difference between weight and mass? Include the units of both quantities in your answer.
Weight is the measure of gravitational force (N)
Mass is the amount of matter in an object ( Kg)
Define 1 of Newton’s Laws and a real world example of it.
Answers may vary
Theo and Kelly are fighting over a remote control. Theo is pulling with a force of 32 N to the left and Kelly is pulling with a force of 38 N to the right. What is the net force
38N -32N = 6N
Nevada
A car is traveling at 50 miles/hour on a straight road. Is the car accelerating? Explain.
The car is not accelerating because the speed and direction of motion do not change.
Astronauts visiting the moon collect and measure rock samples. Rock A is a 2 kg rock that weighs 1 N on the moon. Rock B is a 4 kg rock that weighs 2 N on the moon.
How and why are the weights of these rocks likely to change once the rocks are brought back to Earth?
Both rocks are likely to weigh more on Earth because Earth exerts a stronger gravitational force on their respective masses than the moon.
Irene and Valerie are in a dogsled race. Using the equations for Newton’s second law, who would MOST LIKELY win if each dog pulls with a force of 50 N?
• Irene has 8 dogs and a sled with a total mass of 500 kg.
• Valerie has 7 dogs and a sled with a total mass of 700 kg.
SHOW YOUR WORK
Irene; A = .8 m/s^2
Juan and Jennifer both try to move a refrigerator to the left. Juan moves the refrigerator with a force of 100 N left and Jennifer also has a force of 100 N left. If their younger sibling pushes the refrigerator to the right with a force of 67N, what is the net force on the object.
100 + 100 - 67 = 133N
What game features the terms love, deuce, match and volley?
Tennis
Compare and contrast a balanced vs unbalanced force.
A balanced force is when an object has a net force of 0
An unbalanced force is when an object has a nonzero net force.
Michael is doing an experiment. He wants to drop a bowling ball and a stuffed bear out the window of a tall building. Under what conditions would they have the same acceleration?
If there was no air resistance