A car travels around an unbanked highway curve (radius 0.15 km) at a constant speed of 25 m/s. What is the magnitude of the resultant force acting on the driver, who weighs 0.80 kN?
a. 0.87 kN
b. 0.34 kN
c. 0.80 kN
d. 0.00 kN
e. 0.67 kN
B
You might also like to view...
Briefly explain why sunspots are cooler than surrounding regions of the Sun, and why they look dark in photos
What will be an ideal response?
A roofer lifts supplies a height of 20. m with a hand-operated winch. How long would it take him to lift a 200. kg load, if the winch has an efficiency of 90%, and the rate at which the winch can do work is 0.80 hp?
What will be an ideal response?
An object moves in a circular path at a constant speed. Compare the direction of the object's velocity and acceleration vectors
A) Both vectors point in the same direction. B) The vectors point in opposite directions. C) The vectors are perpendicular to each other. D) The acceleration is zero but the velocity is constant.
Two long, parallel wires carry currents of different magnitudes. If the current in one of the wires is doubled and the current in the other wire is halved, what happens to the magnitude of the magnetic force that each wire exerts on the other?
A) It is doubled. B) It stays the same. C) It is tripled. D) It is quadrupled. E) It is reduced by a factor of two.