A car rounds a curve while maintaining constant speed. Which of the statements is correct?
A. The velocity of the car is constant
B. The acceleration of the car is zero
C. A net force acts upon the car
D. No net force acts on the car
E. The velocity of the car is zero
Answer: C
You might also like to view...
If your mass is 60 kg on Earth, what would your mass be on the Moon?
A) 10 lb B) 50 kg C) 10 kg D) 60 lb E) 60 kg
Potential of Point-Charges: A square is 1.0 m on a side. Point charges of +4.0 ?C are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 ?C and -3.0 ?C. What is the potential (relative to infinity) at the midpoint of the square? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 1.0 × 104 V B. 1.0 × 105 V C. 1.0 × 106 V D. 0 V E. infinite
The inhabitants of a planet in another galaxy have their eyes at the exact center of their 4.0-m long bodies. How long must a plane mirror be for such a creature to be able to see all of its body in the mirror?
a. 1.0 m b. 2.0 m c. 2.5 m d. 4.0 m e. 8.0 m
Suppose that the electric force between two objects is 2 N and that you then double the distance between the objects. The new force is
A) 1 N. B) 0.25 N. C) 0.5 N. D) 4 N. E) 8 N.