Forces
force
What is my very first step when analyzing graphs?
circle the axes
Objects with more mass need more force applied to them in order to change their movement. Which of Newton's laws states that?
Newton's 2nd law of motion
Why is it important to have multiple trials in an experiment?
To make sure your data is consistent
John designed an experiment to measure the effect of the mass or a marble and the speed it travels down the ramp. He sent marbles of different masses down the same ramp and measured the speed they traveled. What did his experiment test?
a variable
This type of force changes the movement of an object
unbalanced forces
What are the only types of motion a position graph will show?
moving away from or toward the starting point
Use Newton's first law to explain why it's important for you to wear a seatbelt.
Every force can be represented as a vector. A vector has two aspects. What are those two aspects?
Size (magnitude/strength) and direction
Simon is doing an experiment to test whether the type of gas he uses changes his fuel mileage in his car. He drives for 3 hours in the city and 3 hours on the highway with each type of gas and records his fuel mileage each time. What was the independent variable in this experiment?
The type of gas used
Joe is perplexed by gravity since he cannot see the force of gravity acting on him. What kind of a force is gravity and other forces that do not require any physical contact?
non-contact forces
What is the only type of movement a speed graph will show?
Speed increasing, decreasing, or staying the same.
Which of Newton's laws explains how push-ups work?
Newton's 3rd Law of Motion
An athlete is running a 5 km race at an average speed of 8 km/hr. If she stops to tie her shoe, and then continues, what happens to her average speed?
It will decrease
They increase
This contact force opposes movement. It acts in the direction opposite to the direction the object is moving.
friction
Graph 1
Which part of the graph shows a constant speed?
Segment B
Newton's law of gravity states that gravitational force is affected by which two things?
mass and distance from other objects
A vehicle travels 5 meters per second. How long will it take the vehicle to travel 100 meters?
(Distance = rate x time)
20 seconds
What is an explanation of something in the natural world that has currently NOT been proven as false and has been studied and supported by a large group of scientists?
Scientific Theory
Jackie is pushing a wheel barrow forward with a force of 25 N. what will happen if she increases her force to 35 N?
the speed of the car would increase
Graph 2
Which segment shows negative acceleration?
Segment D
Two objects have a certain gravitational force between them. What would happen to the gravitational force if the mass of one of the objects suddenly increased?
Picture
Which person is feeling the strongest effect of gravity?
Person A
Graph 3
Describe the movement of the object at Segment D