Answered: A motorist starts from rest at point A… | bartleby

Related questions

Question

ASSIGNMENT No. 4:
A motorist starts from rest at point A on a circular entrance ramp when t = 0, increase the
speed of her automobile at a constant rate, and enters the highway at point B. Knowing that
her speed continues to increase at the same rate until it reaches 100 kph at point C, determine
(a) the speed at point B, (b) the magnitude of the total acceleration when t = 20 s.
%3D
100 m
150 m

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

If you throw up a ball, after 4 seconds it return back to your hands, what is the height of this ball from your hands to the highest position. (Assume g=10m.s-²) 18 O 15 metres O 20 metres O 25 metres 30 metres Vo h
The instantaneous acceleration at time t = 1 s is m/s2.The instantaneous acceleration at time t = 3 s is m/s2.The instantaneous acceleration at time t = 5 s is m/s2.
A car is traveling at a rate of 58 feet per second when the brakes are applied. The position function for the car is given by s= -7.25t2 + 58t, where s is measured in feet and t is measured in seconds. Use this function to complete the table showing the position, velocity, and acceleration for each given value of t. 3 t S ds dt d²s dt² 0 Need Help? 58 -14 5 What can you conclude?! It takes 2 Read It 0 ✓ ✔ 50 75 58 -29 1 ✓ Viewing Saved Work Revert to Last Response X X 87 58 -43 5 2 ✓ X X 110.25 58 -58 X seconds for the car to stop, at which time it has traveled 87 D X ]x | 58 X 120.5 ft. -725 4 x x
Page > of 4 22. The accompanying graph shows Marie's distance from home (A) to work (F) at various times during her drive. Marie's Trip to Work 20 15 10 DE 10 15 20 25 30 35 40 Time (min) Marie left her briefcase at home and had to return to get it. State which point represents when she turned back around to go home and explain how you arrived at that conclusion. a b. Marie also had to wait at the railroad tracks for a train to pass. How long did she wait? MacBook Air 50 F3 I F8 > F9 5 FIO 44 F7 F5 %23 %24 & 3 4. 5 8 R Y D F H. K 60 (ju) ewoH woJj eouejsic
4. Determine the maximum constant speed at which the 2.2-Mg car can travel over the crest of the hill at A without leaving the surface of the road. Neglect the size of the car in the calculation. y -y = 20 (1 ¬0 000) 100 m
14- 12니 E 10 8. 6. 4 21 F 10 12 14 16 18 20 6. Time (hours) The total distance travelled is km. The net displacement is km. displacement at t=18 hrs is km The distance between points E and F is km. The displacement between points E and F is km Distance (km)
A ball is thrown vertically upward with an initial speed v and reaches a maximum height y1. The same ball is thrown with an initial speed 3v to reach the maximum height y2. What is the correct relationship between y2 and y1? А. y2 = ½ y1 В. y2 = 2 y1 %D С. y2 = 4 y1 y2 = 9 y1 D.
A car brakes with a constant acceleration. If the car's speed is tripled, the time to come and the stopping distance changes by a factor of to a stop changes by a factor of 0 9,3 O 9, 9 O 1,1 (unchanged) O 3, 9
An object moves along the x axis according to the equation x = 2.80t² (a) Determine the average speed between t = 1.60 s and t = 2.80 s. m/s (b) Determine the instantaneous speed at t = 1.60 s. m/s Determine the instantaneous speed at t = 2.80 s. m/s (c) Determine the average acceleration between t = 1.60 s and t = 2.80 s. m/s² (d) Determine the instantaneous acceleration at t = 1.60 s. m/s2 -2.00t+3.00, where x is in meters and t is in seconds. Determine the instantaneous acceleration at t = 2.80 s. m/s2 (e) At what time is the object at rest?