A student needs to move a table, so he pushes the table to the right with a force of 20 N. Someone else comes to help and pulls the table to the right with a force of 30 N. What is the net force and direction?
What is 50 N to the right
100
What is the formula to calculate speed?
What is distance divided by time.
100
Heat transfer always moves from ______ to ______.
What is hot to cold.
200
This energy is the energy of motion
What is kinetic energy
200
The type of thermal energy transfer that requires objects to touch to transfer heat
What is conduction
200
You can make an inclined plan be more efficient if you do these two things
What is increase the distance and decrease the angle/slope/height of the inclined plane
200
A race-car travels around a 100 meter track in 2 seconds. What is the average speed?
What is 50 m/s.
200
The energy transfer in a flashlight
What is chemical to electrical to light
300
Where on a roller coaster would the car have the most potential energy?
What is at the top
300
The type of thermal energy transfer that moves in currents and usually affects liquids and gases
What is convection
300
What is the disadvantage of using a fixed pulley?
What is a fixed pulley doesn't change the amount of force, it only changes the direction of the force.
300
A train travels at a speed of 70 km/h for 3 hours. How far did it travel?
What is 210 kilometers.
300
A cup has a temperature of 70 degrees F. Ice has a temperature of 32 degrees F.
How will the heat transfer if these two objects touch?
What is from the cup to the ice.
400
If a ball is dropped from the top of a bookshelf, the potential energy decreases. What happens to the kinetic energy as it is dropped?
What is it will increase
400
The type of thermal energy transfer that does not require any matter to transfer heat. This type of transfer can happen in empty space.
What is radiation
400
David pushes a cart with 50 N of force. The cart will not move unless he overcomes 9 N of friction. What is the net force of the cart when David starts pushing?
What is 41 N.
400
Jogger A traveled 9 meters in 3 seconds. Jogger B traveled 10 meters in 5 seconds. Which jogger is faster and by how much?
What is Jogger A by 1 m/s.
400
How would I represent constant speed on a distance vs time graph?
What is a straight diagonal line
500
Does an airplane flying in the air have potential energy, kinetic energy, or both?
What is both
500
A woman is cooking soup and gets burned by the spoon. What type of energy transfer is this?
What is conduction
500
When it comes to using simple machines, if you want to decrease the amount of input force, what do you have to do?
What is increase the distance
500
An airplane leaves New York to fly to LA. It travels 3,850 km in 5 hours. What is the average speed of the plane?
What is 770 km/h
500
How would I represent an object at rest on a distance vs. time graph?