Convert
What is 9.55 RPM in radians per second?
About 1 rad/sec
What does RPM stand for? What does Rad/sec stand for?
Revolution per minute / Radians per second
A student runs a quarter mile lap in 6 minutes. What is his speed in MPH
15 MPH
What is the difference between speed and velocity?
Velocity has direction. Speed does not.
How many times will a wheel spin around in 1 minute if the radians per second = 1.571
About 15 times
If an engineers is looking for an angular speed what units should he use. (2 Possible answers)
Either RPM of Rad/Sec
A car travels on interstate 80 east at a constants speed for 1000 feet in 40 seconds. what is the cars velocity in ft/sec?
25 ft/sec East
A man drives 50 miles in 2 hours to his friends house. He returns back to his house during rush hour. It takes him 3 hours to drive home. What is the mans average speed?
20 MPH
A vehicle travels west at 0.75 miles per min. What is the vehicles velocity in MPH?
45 MPH West
What is the common English unit for acceleration?
Ft/sec2
Provide an example of an angular velocity with the correct units.
"any number" in rad/sec or RPM, Clockwise or Counterclockwise
A train travels 1056 inches in 1 second. What is the trains speed in MPH? Hint: 63360 inches in 1 mile
60 MPH
A wheel has an angular acceleration of -0.04 rad/sec2. Describe what is happening to this wheel.
The wheel is decelerating at -0.04 rad/sec2
A wheel makes 2 revolution in 1 minute clockwise. What is the wheels angular velocity in rad/sec?
0.2094 rad/sec clockwise
A pilot increases the speed of a jet uniformly from 5 mi/hr to 70 mi/hr in 25 seconds. What is the acceleration of the aircraft in ft/sec. Hint 5280 feet = 1 mile
3.8 ft/sec2
A Canadian Speed limit sign reads "Speed Limit 100 Km/h". A driver is in an American car and travels down the highway at 65 MPH. A Canadian Police Officer is strictly monitoring the speed limit by radar. Will the driver be pulled over? What does the conversion equal?
Yes, 100 Km/h = 62 MPH
A man hikes a total distance of 10 miles. It took 5 hours to complete the hike. A physicist calculated the mans average velocity and found it to be 0 mph. What does this tell you about the mans hike?
He went one direction for 5 miles and came back 5 miles the opposite direction.
A bird flies south for the winter a distance of 700 miles in 10 days. On his return he decides he likes the warmer weather better and only goes 124 miles north during the spring which took 2 days. What is the birds average velocity in mph?
2 MPH South