Forces 1
What's required in a contact force?
What is objects touch.
If Logan tries to lift a box but can't, what force is he unable to overcome?
What is gravity?
What is another name for Newton's first law?
What is the Law of Inertia?
What is the equation for speed?
Speed = distance/time
S=d/t
What single word describes kinetic energy?
What is motion?
What are the three types of non-contact forces?
What is:
1. Magnetic force
2. Electrical force
3. Gravitational force
What term is defined as follows: "the force that surfaces exert to prevent solid objects from passing through each other"?
What is normal force?
What is inertia?
What is an object's resistance to change in motion?
Draw a picture of an impossible speed graph.
See teacher for details.
In which of the following situations is kinetic energy transformed into potential energy?
a. when a water tank ruptures and water flows out
b. when a ball is thrown straight up into the air
c. when a boulder rolls down a mountain
d. when a tree branch falls toward the ground
B. when a ball is thrown straight up into the air
If the vectors are equal and opposite directions, is it showing a balanced or unbalanced force?
What is balanced force.
Using the equation below, which number represents Net Force?
15N + 4N = 19N
What is 19N?
Which of the three laws explains normal force?
What is Newton's Third Law?
What instruments do you need to calculate speed?
A tool to measure distance (i.e. ruler, measuring tape, etc.) and a stopwatch.
At what point could potential energy be 0%?
When an object is using 100% of its kinetic energy.
If there is an unbalanced force, what is changing?
What is:
- speed
- direction
Write a scenario to describe what is shown in the equation below:
15N + 10N = 5N
Your scenario should describe that the forces are moving in opposite directions and are unbalanced.
Give an example of negative acceleration.
Draw the graph lines that describe these types of motion:
1. Constant speed
2. Accelerating
3. Decelerating
4. No movement
You do not need to draw the x and y axes, just the lines.
See teacher drawing.
According to the Law of Conservation of Energy, why is the following statement untrue:
When I turn on a flashlight, I create light energy.
Because energy cannot be created or destroyed, only transformed.
Bonus 100 points for explaining the energy transformation from the battery to the light bulb.
If Mrs. Lo Bello pushes a box across the floor, what four forces are acting on the box?
1. Gravity
2. Normal force
3. Friction
4. Mrs. Lo Bello's applied force
Ms. Sprague wants to conduct an experiment on how unbalanced forces affect objects. She uses a hairdryer to blow air on a ping pong ball. What TWO variables should Ms. Sprague measure?
What is
1. Speed
2. Direction
DAILY DOUBLE
How does friction come into play with Newton's first law of motion?
An object in motion will stay in motion unless an external force is applied, and friction is the external force applied that will slow the object down.
Draw a graph that matches the story below:
Mrs. Lo Bello and Ms. Sprague are on a walk. They are walking a constant speed for all 4 miles. They walk for 2 miles and Ms. Sprague realizes she dropped her keys .5 mile back so Mrs. Lo Bello stops to wait for Ms. Sprague. Once Ms. Sprague caught back up, they continued walking the last 2 miles together at the same speed.
Make sure to label the axes and create a title.
See teacher for details.
Jimena is riding her skateboard at the park. What happens to the energy transformation as she skates down the half pipe? How does this change when she pushes off the top before dropping in?
The potential energy transforms into kinetic as she drops in. When she pushes off, she adds an applied force which increases the kinetic energy available to use.