A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 20 m/s north, and the total acceleration of the car is 2.5 m/s2 37° south of west. Which of the following is correct?
a. R = 0.40 km, and the car's speed is decreasing.
b. R = 0.20 km, and the car's speed is decreasing.
c. R = 0.20 km, and the car's speed is increasing.
d. R = 0.16 km, and the car's speed is increasing.
e. R = 0.16 km, and the car's speed is decreasing.
b
You might also like to view...
When the Sun was younger, how did its habitable zone compare with its habitable zone today?
A) narrower and closer to the Sun B) narrower and farther from the Sun C) wider and closer to the Sun D) wider and farther from the Sun
A frictionless simple pendulum, with a small but dense 4.4-kg bob at the end and a length of 75 cm, is released from rest at an angle of 50° with the vertical
(a) To what height above its lowest point does the bob swing on the other side? (b) What is the speed of the bob at the bottom of the swing?
What forces are included in a free-body diagram for an object? a. The forces acting on the object and the forces the object exerts on any other objects it is in contact with. b. The forces acting on the object and the forces the object exerts on all other objects in the system
c. Only the forces acting on the object. d. Only forces internal to the object.
A heater is rated at 1200 watts for a 120-volt source.If two heaters are connected in parallel across the 120-volt source, the total power drawn from the source is __________
Fill in the blank(s) with correct word