PHYS1301 Quiz 1c Fall 2017 1. A Ferrari sports car can accelerate at 18 m/s. (a)
ID: 1789739 • Letter: P
Question
PHYS1301 Quiz 1c Fall 2017 1. A Ferrari sports car can accelerate at 18 m/s. (a) Is this acceleration greater than, less than, or equal to 18 ft/s'? Explain (b). Determine the acceleration of a Porsche in ft/s. (e) Determine its acceleration in km/min2.(3.28 ft 1m, 60 s 1 min) A car in stop-and-go traffic starts at rest, moves forward 22 m in 8.0 sec, then comes to r again. The velocity-versus-time plot for this car is given in the figure. A). What distance does the car cover in the first 4.0 seconds of its motion? B). What distance does the car cover in the last 2.0 seconds of its motion? C). What is the constant speed V that characterizes the middle portion of its motion? 2. Tiae () You drive a car 1450 ft to the east, then 2500 ft to the north. If the trip took 4 min and 20 sec, what were the direction and magnitude of your average velocity (in m/s)? An astronaut on the planet Zarcon tosses a rock horizontally with a speed of 5.80 m/s. The rock falls through a vertical distance of 1.40 m and lands a horizontal distance of 9.5 m from the astronaut. What is the acceleration of gravity on Zarcon? A soccer ball is kicked from the ground with an initial speed of 15 m/s. After 0.3 s its speed is 13.1 m/s. Find the initial direction of the ball. 3. 4. 5.Explanation / Answer
1. (A) a= 18 m/s^2
a = (18 / 0.3048) ft/s^2 = 59 ft/s^2
so it is greater than 18 ft/s^2.
(B) a = 59 ft/s^2
(c) a = 18 x 10^-3 km / (1/60 min)^2
a = 64.8 km/min^2
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.