Shannon decides to check the accuracy of her speedometer. She adjusts her speed to read exactly 70 mph on her speedometer and holds this steady, measuring the time between successive mile markers separated by exactly 1.00 mile. If she measures a time of 54 s, is her speedometer accurate? If not, is the speed it shows too high or too low?
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- the earth is approximately 1.5x10^8 km from the sun. how many minutes does it take light to travel from the sun to the earth? light travels at a speed of 3.00 x10^10 m/sStarting from rest, a car accelerates at a constant rate of 5.2 m/s2 for a total of 5 seconds. Compute the velocity of the car at 1 s, 2 s, 3 s, 4 s, and 5 s. The values of velocity at 1 s, 2 s, 3 s, 4 s, and 5 s are ____m/s, ___m/s, ___m/s, ___m/s, and ___m/s, respectively.Tectonic plates are large segments of the Earth’s crust that move slowly. Suppose that one such plate has an average speed of 3.8 cm/yr.Assuming the plate maintains the given speed for 1.0 s, how far, in meters, does it move? and what is its average speed in kilometers per million years?
- We first need to convert the period from days to seconds. (Pdays)(Ns/day) Ps Ps S = = SA car takes 5.0 s to go from v=0 m/s to v=24 m/s at constant acceleration. If you wish to find the disance traveled using the equation d=1/2at squared, what value should you use for a? Express your answer to two significant figures and includ the appropraite units.An engineer is testing how quickly a car accelerates from rest. The velocity V is measured in miles per hour, as a function of time t, in seconds, since the car is at rest. See the table below. What is the slope for the linear function modeling velocity as a function of time, V=, and what would the formula be for the velocity at time 0, V(0) Time (t) Velocity (V) 2.0 28.9 2.5 35.0 3.0 41.1 3.5 47.2
- Ken Runfast is the star of the cross-country team. During a recent morning run, Ken averaged a speed of 6.6 m/s for 12.5 minutes. Ken then averaged a speed of 6.5 m/s for 7.2 minutes. Determine the total distance (in m) that Ken ran during his jog.A car drives from Mechanicsburg, PA to Carlisle, PA which is 17 km away in 17 minutes. Due to traffic, the return trip takes 30 minutes. What is the average speed for the whole trip? Give you answer in units of m/s to 1 decimal place.Justin visits the Grand Canyon and drops a rockoff the edge of a cliff. The rock falls 12 m the firstsecond, 34 m the next second, 56 m the third second,and so on. What would be the total distance the rockfalls after 14 seconds?
- A remotely controlled toy car travels along a straight line and its position changes with time following the law: x(t)=51³-1²+1 where time t is measured in seconds and the coefficients have such dimensions that the position x(t) is measured in meters. 10. What is the displacement of the car for the first 2 seconds since the start at t=0 s? 11. What is the average velocity of the car for the time period between the t=0s and t=2 s? 12. What is the instantaneous velocity of the cat at t=2s ? 13. What is the instantaneous acceleration of the car at t=2 s?A driver traveling north slows down from 35.4m / s to 0m / s in 8.6 seconds. What is the magnitude of the driver's acceleration? The standard units for acceleration are "meters per second-squared" or "meters per second per second" and it's written as m / (s ^ 2) or m / s / sProblem 6: Part (a) Determine the amount of time in s it would take to travel 1.25 mm. t1 = ______ Part (b) Determine the amount of time in s it would take to travel 1.1 cm. t2 = ______