A car starts from a stand still with a constant acceleration of 3.94 ft/ s2 for 20 seconds. At that instant, upon reaching that speed, the driver decides to move at a constant speed for 40 seconds. In the last section of its journey, the driver hits the brakes causing a deceleration of 8.20 ft/s2 until the car comes to a complete stop. Indicate the type of movement that occurs in each section, calculate velocity, acceleration and position in each section (express the results in the International System units), graph velocity, acceleration, and position as a function of time for those same sections, and finally calculate the distance traveled.

A car starts from a stand still with a constant acceleration of 3.94 ft/ s2 for 20 seconds. At that instant, upon reaching that speed, the driver decides to move at a constant speed for 40 seconds. In the last section of its journey, the driver hits the brakes causing a deceleration of 8.20 ft/s2 until the car comes to a complete stop. Indicate the type of movement that occurs in each section, calculate velocity, acceleration and position in each section (express the results in the International System units), graph velocity, acceleration, and position as a function of time for those same sections, and finally calculate the distance traveled.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.19P: Plot the earths gravitational acceleration g(m/s2) against the height h (km) above the surface of...

See similar textbooks

Similar questions

DYNAMICS OF RIGID BODIES (RECTILINEAR MOTION WITH CONSTANT ACCELERATION) A body starts with a velocity of 3 m/s and moves in a straight line with a constant acceleration. If its velocity at the end of 5 seconds is 5.5 m/s, determine the following:(a)the uniform acceleration(b)distance travelled in 10 seconds.
An automobile accelerates uniformly from a constant speed of 60 Kph to a speed of 90 Kph in 5 seconds. Determine the acceleration?
The acceleration of a sniper rifle bullet inside the rifle’s barrel is given by a=k/x, where k is a constant and x is the position of the bullet along the barrel. If the bullet starts from rest at x=7.5 mm and comes out at the end of the 750-mm barrel with a speed of 600 m/s, What is the velocity of the bullet as it passes the midpoint of the barrel?
Dynamics: The box, whose size does not matter, slides downward along a curved trajectory defined by the parabola y=0.4x2. When it is at A (xA=2 m , yA=1.6 m), the speed is vB = 8 m/s and the increment of its speed is dvB/dt=4 m/s2. Determine the magnitude of the acceleration of the box at this instant
A truck travelling at 70km/h suddenly puts on the brakes and it takes 50 seconds to travel the next 1 km. Find the Deceleration and the distance travelled to come to a complete stop.
An automobile starting from rest speeds up to 12 m/s with a constant acceleration of1.2 m/s^2. Runs at fast speed for some time, and finally comes to rest with a deceleration of 1.5 m/s^2. If the total distance travelled is 308 m, find the total time required. Draw the v-t and s-t curves.
A car moves along a straight line whose equation of motion is given by V =4t>- 3t+1 where (V) is in meter per second and (t) is in seconds. After 3 seconds from the start the linear displacement was 27m. When t =7 seconds, determine the linear displacement, linear velocity and linear acceleration of the car.
A horse runs with a constant acceleration of a = 0.2 m/s^2 from rest for 15 seconds until it reaches maximum speed. Then, for the next 20 seconds, it travels with a uniform maximum speed. Finally, the horse decelerates uniformly for 10 seconds before coming to rest. Determine the total distance traveled by the horse
A motorcycle starts from rest at t = 0 and travels along a straight road with a constant acceleration of 6 ft/sec2 until it reaches a speed of 50 ft/s and maintains this speed throughout the duration of the motion. Also, when t = 0, a car located 6000 ft away, travels towards the motorcycle at a constant velocity of 30 ft/s. Determine the time at which the two vehicles pass each other,Calculate the distance traveled by the motorcycle the moment that the two vehicles pass each other, Calculate the distance traveled by the car the moment that the two vehicles pass each other.
The certain particle has a motion given by the equation s = 3t4 – 4t3 + 5t2 where s is in meter and t in seconds. Compute its values of velocity and acceleration when t=3 sec.
A subway car leaves station A; it gains speed at the rate of 4 ft/s² for 6 s and then at the rate of 6 ft/s² until it has reached the speed of 48 ft/s. The car maintains the same speed until it approaches station B; brakes are then applied, giving the car a constant deceleration and bringing it to a stop in 6 s. The total running time from A to B is 40 s. Determine the distance between stations A and B. . Do not type the solution. Show the complete computation/solution with the necessary graphs or diagrams.
a driver is traveling in a curved section of a roadway with a diameter of 1mi the driver is traveling at a velocity of 100 ft/s and suddenly applied brakes causing the car to slow down at a constant rate. if after 0.25mins the speed reduced to 25 mph. a) determine the car's tangential acceleration.b) Determine the car's normal acceleration.c) what was the car's acceleration after applying brakes?