A car originally traveling at 30 m/s manages to brake for 5.0 seconds while traveling 125 m downhill. At that point the brakes fail. After an additional 5.0 seconds it travels an additional 150 m down the hill. What was the acceleration of the car after the brakes failed?
4.0 m/s2
You might also like to view...
Which of the following best defines convergence?
A. Linking and sharing related content. B. The need to frequently update website content to encourage return visitors. C. The trend of device sizes getting smaller and faster. D. The trend of connecting information and accounts between devices.
Tension is actually a force that tends to
A) stretch something. B) compress something. C) break something. D) balance something.
One morning you discover that a tire on your auto is in need of air. This is visible: it has flattened significantly. Significant flattening indicates low air pressure
A. only if all tires are equally flattened; otherwise it is just low atmospheric pressure. B. and higher temperature. C. because more of the tire's surface area is required to provide same amount of force. D. and less weight.
A lens of focal length 45 mm is mounted on a 35-mm camera. The lens aperture is set at f/2.0 and the shutter speed set at 1/2000 s
The photographer wants to keep the same exposure (amount of light), but wants to change the f-number to f/8.0 for greater depth of field. What should be the new shutter speed to maintain the same exposure? A) 1/4000 s B) 1/8000 s C) 1/500 s D) 1/125 s E) 1/1000 s