A policeman investigating an accident measures the skid marks left by a car. He determines that the distance between the point that the driver slammed on the brakes and the point where the car came to a stop was 28.0 m
From a reference manual he determines that the coefficient of kinetic friction between the tires and the road under the prevailing conditions was 0.300. How fast was the car going when the driver applied the brakes? (This car was not equipped with anti-lock brakes.) A) 10.7 m/s
B) 12.8 m/s
C) 21.4 m/s
D) 32.9 m/s
E) 45.7 m/s
B
You might also like to view...
Exclusion Principle: A hydrogen atom is in the 6h state. How many electrons are allowed in this state?
A. 22 B. 18 C. 14 D. 10 E. 6
How is it possible for Mercury and the Moon to have water ice at their poles?
What will be an ideal response?
Two stars have apparent magnitudes of 0 and 5. If both stars are 117 parsecs away, which star is intrinsically brighter and by what factor is it brighter than the other?
What will be an ideal response?
A resistor operated at 120 V dc is rated at 1.40 kW
(a) What is the normal operating current through the resistor? (b) What is the resistance of the resistor?