A car and a truck are traveling in the same direction along a straight section of highway. The car is moving at 55. mph and the truck is moving 45. mph. What is the velocity of the car relative to the truck?
What will be an ideal response?
10. mph forward
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For an observer on Uranus, the ecliptic passes only a few degrees from the celestial poles
a. True b. False Indicate whether the statement is true or false
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 2sin(?x)cos(3?t), where x is in m and t is in s. What is the distance (in m) between the first two antinodes?
a. 8 b. 2 c. 4 d. 1 e. 0.5
A 35 N-force toward the west is applied to an object. The object moves 20 m east during the time the force is applied. What is the change in kinetic energy of the object?
A) 0.0 J B) 0.57 J C) 1.0 J D) -700 J E) 350 J
Tarzan swings back and forth on a long vine. His friend Jane notices in amazement that he makes 30 complete swings in 2.4 minutes. (a) What is the frequency (in hertz) of Tarzan's swing? (b) How long is the vine he is using?
What will be an ideal response?