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Question 6 – Which of a car’s devices can beused to cause a car to accelerate? ( = yes, no) =
PHYS115 – Spring 20123Test 1 - 5 March 2012gas pedalbrake pedalsteering wheelQuestion 7 – Which observation could verify that the mass of an object is exactly 1 kilogram?Question 8 – You carefully back up into a narrow alley, at a speed of 5 mph. In the alley you brake, and gradually come to a stop.In which direction was the acceleration of the car while you were using the brake?
PHYS115 – Spring 20124Test 1 - 5 March 2012a.out of the alleyb.into the alleyc.it was zero d.upward (support force from the alley surface) 1 Question 9 – What is the SI unit of acceleration?a.1 N/sb.1 N/s2c.1 m/sd.1 m/s2Answer d. See book.Question 10 – A girl slides down a slide. What kind of forces act on her? ( = yes, = no) gravitational forcesupport forcestatic frictional force