The graph represents the velocity of a car over time. Where the car ends up, relative to its starting point, can be found by
A. adding the slopes of each section of the graph.
B. adding area 1 to area 2.
C. subtracting area 2 from area 1.
D. subtracting area 1 from area 2.
C. subtracting area 2 from area 1.
Since this is a velocity graph, a negative velocity implies the object is moving in the opposite direction. The area under the velocity graph represents the distance traveled.
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How many minutes is 182 days?
A) 1.31 × 105 min B) 2.62 × 105 min C) 7.86 × 107 min D) 1.57 × 107 min E) 127 min
Collisions in Two Dimensions: Two dogs, Rover and Fido, run on a level frictionless surface. Rover runs eastward with a momentum of 24 kg . m/s, and Fido runs northward with momentum 10 kg . m/s. They make a sudden perfectly inelastic collision. What is the magnitude of their combined momentum after the collision?
A. 14 kg . m/s B. 26 kg . m/s C. 34 kg . m/s D. It cannot be determined without knowing the masses and velocities of the dogs.
How does the velocity of air moving over the top of the wing of an airplane in flight compare to the velocity of air moving under the wing?
A. The velocity under the wing is greater B. The velocity over the wing is greater C. The velocities are the same
Which of the following statements is true?
A. electric field lines stay inside equipotent surfaces B. equipotent surfaces intersect in straight lines C. equipotent surfaces intersect in curved lines D. electric field lines are perpendicular to equipotent surfaces E. equipotent surfaces are parallel to each other