Gravity
What happens to the force of gravity between two objects as one or both of their masses increase?
Gravity Increases
Convert 150 decimeters to meters*
15 meters
Speed equals distance travelled divided by time taken. A car travels at 125 m/s for 5 minutes. How far does it travel?
37500 meters
How do we define work within science?
To be engaged in physical or mental activity in order to achieve a purpose or result, especially in one’s job; do work
A __________ is the force exerted by the machine
Output Force
You are trying to figure out your weight on Mars. The gravity on Mars is about 1/3 of that on Earth. Your mass is 100kg. Calculate your weight on Mars. (Note: Weight = Mass*Gravity Constant)
327 N
You have a car that is traveling 75 kilometers per hour. Convert that to meters per minute. (Hint: Treat this as a fraction, but convert the top and bottom separately)
1250 meters per minute
A spaceship is flying down a perfectly straight line. It can only go forward or backwards. It goes forward 1000 miles, goes backwards 500 miles and then forward 600 miles. What is the Net Distance traveled by the spaceship?
1100 miles
Mr. Grim put in a full days work, getting out of his chair 15 times for a total work of 144,000 joules over an 8 hour workday. What was his total power output?
5 watts
What part of a screw makes it an inclined plane?
The ridges
The gravity on the moon is 1/3 the gravity on Mars. Mars gravity is 1/3 the gravity on Earth. Quade the Alien has a mass of 50 kg on Earth. What is his mass on the moon?
50 kg
Convert 1,983 hectometers to dekameters
19,830
Acceleration equals change in speed divided by time taken. Change in speed is the final speed minus the starting speed. A car goes from 250 m/s to 500 m/s in a span of 10 seconds. What is its acceleration?
25 m/s^2
Mr. Grim uses 10,000 joules of work to pick up TJ Marshal from his seat and gently tossing him 10 meters across the room. How many Newtons of force is he using?
1,000 newtons
A machine that combines two or more simple machines is called a _________________
Compound machine
If the distance between the two objects is doubled, how is the gravitational force effected?
It is 1/4 times the original gravity
The formula for speed is S=D/T. You are traveling down the road at 10 m/s. You travel for 150 seconds. How far have you traveled?
1500 meters
What is the difference between Net Distance and Displacement?
One takes into account directional terms, like North, South, East and West
What is power, as defined in our notes?
A quantity that measures work in relation to time
A wedge is made up of two __________ working together
What does the Law of Universal Gravitation state?
that all objects in the universe attract each other through gravitational force
Convert 17 meters to centimeters
1700 centimeters
What is the difference between total distance and net distance?
Total distance adds up all of the distance traveled, while net distance only measures the distance from where one started to where they ended
What is mechanical advantage?
The use of machines to help make a job take less force
A __________ is the object that turns around the fulcrum
The arm