Acceleration: Suppose that a car traveling to the west (-x direction) begins to slow down as it approaches a traffic light. Which statement concerning its acceleration must be correct?
A. Its acceleration is positive.
B. Its acceleration is negative.
C. Its acceleration is zero.
D. Its acceleration is decreasing in magnitude as the car slows down.
Answer: A
You might also like to view...
Process of Science: If there is a particularly cold winter in Minnesota one year, does this mean that global warming is wrong, or has ended?
What will be an ideal response?
Newton hypothesized that the forces acting on planets was
A) along their directions of travel. B) perpendicular to their directions of travel. C) toward the Sun. D) none of the above
A box is placed on a table which rests on the floor. The box pushes on the table; the Newton's third law pair to the the box's push on the table is the table's push on the floor
A) True B) False
A high-voltage powerline operates at 500000 V-rms and carries an rms current of 500 A. If the resistance of the cable is 0.050?/km, what is the resistive power loss in 200 km of the powerline?
a. 250 kW b. 500 kW c. 1 Megawatt d. 2.5 Megawatts e. 250 Megawatts