The pulling force that always acts along the direction of the rope in a pulley system is called ____________________.
Tension
15
When you drop a sheet of crumpled paper and a sheet of flat paper off a table at the same time, why does the flat sheet of paper hit the ground later?
air friction
15
A speeding truck makes contact with a bug on its windshield. Compare the force that the bug exerts on the truck to the force the truck exerts on the bug.
Forces are the same for both
15
What is the weight in newtons of a 15-kilogram toddler on Earth?
150 N
15
Calculate the power required to move a 2,000-kilogram automobile to the top of a 100-meter hill in 15.0 seconds. Express the power both in units of watts and horsepower.
133333.33 Watts
15
If you exert the same force on Earth that Earth exerts on you, why doesn’t Earth move up to meet you when you jump off its surface?
it has too much mass
15
The slope of a speed versus time graph represents the...
acceleration
15
The slope of a distance time graph is the ____________.
average speed
15
The rate of doing work is called ....
POwer
15
The unit Newton*meter is the same as a ...
Joule
15
The unit Joule / second is the same as .....
Watt
15
Convert 200 cm to meters
2 meters
15
Convert 150 cm to meters
1.5 meters
15
Physics is the study of matter and __________
energy
15
Physics is ________.
Phun
15
He believed that all objects keep moving because you stopped pushing them.
