Amir drives his ATV from coordinates (5.0 km, 25°) directly to (25.0 km, 45°) in 45 minutes. What is the ATV's speed?
a. 0.5 km/h
b. 20.4 km/h
c. 27.2 km/h
d. 34.0 km/h
c
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A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:
A. 574? C B. 232? C C. 301? C D. 614? C E. 276? C
According to the theory of relativity, the speed of light is absolute (meaning that everyone always measures it to have the same value)
Indicate whether the statement is true or false
When a rigid body rotates about a fixed axis all the points in the body have the same tangential speed
Indicate whether the statement is true or false
A person who normally weighs 700 N is riding in an elevator that is moving upward but slowing down at a steady rate. If this person is standing on a bathroom scale inside the elevator, what would the scale read?
A) more than 700 N B) less than 700 N C) 700 N D) It could be more or less than 700 N, depending on whether the magnitude of the acceleration is greater than or less than 9.8 m/s2.