A hammer is used to pull a nail from a piece of wood How could the hammer be modified to make the task easier
A bicycle is an example of what machine
A man and a woman exert a total of 900 N by pushing a car 20 meters across the street The man exerts twice as much force as the woman How much work does the man do
What factor prevents a machine from operating at 100 percent efficiency
What term describes an educated guess about what the answer to a question might be
The custom of watching fireworks on the Fourth of July would be studied by this social science
A jogger runs at an average speed of 5 ms for 3 minutes then finishes with an average speed of 4 ms for 2 minutes What is his average speed in ms for the run
If a lahar is traveling at 80 kmh how long will it take the lahar to travel 20 km