Find velocity of the vehicle, Mechanical Engineering

Find velocity of the vehicle:

A car having mass 400kg is moving with velocity of 20m/sec. A force of 200N that acts on it for 2 mins. Find velocity of the vehicle:

(1) When force acts in the direction of motion.

(2) When force acts in the opposite direction of motion.

 

Sol :

m = 400Kg, u = 20m/sec, F = 200N, t = 2min = 120sec, v =?

As                F = ma

200 = 400 X a

a=0.5m/sec2                                                                                                     ...(i)

(1) Velocity of car after 120sec, When force acts in the direction of motion.

v = u + at

= 20 + 0.5 X 120

v = 80m/sec                                                                           ........ANS

(2) Velocity of car after 120sec, when force acts in opposite direction of motion.
v = u - at

= 20 - 0.5 X 120

v = -40m/sec                                                    .......ANS

Negative sign indicate that body is moving in the reverse direction

Posted Date: 10/19/2012 7:17:15 AM | Location : United States







Related Discussions:- Find velocity of the vehicle, Assignment Help, Ask Question on Find velocity of the vehicle, Get Answer, Expert's Help, Find velocity of the vehicle Discussions

Write discussion on Find velocity of the vehicle
Your posts are moderated
Related Questions
Piston and Piston Rings - Part of combustion engine: Piston: The piston reciprocates within cylinder and transmits force exerted by expanding gases to crank by means of conn

Helium Helium (He) is an inert, very light monoatomic gas, of atomic weight of 4. It is obtained by separation from natural gas. Helium is refined to a purity of min.  99.99

What is Floating Foundations The settlement of  foundations can be reduced if the applied load is compensated by excavation of a basement. This basement may be in the form of

Explain introduction of  Radial Drilling Machine Machine Name: - Radial Drilling Machine Radial Drilling machine is a machine fitted with a rotating cutting tool known as dr

What is the initial velocity of the ball: A ball is horizontally thrown from the top of a building 60 m height, hits the horizontal ground 25 m from the base of the building a

Illustrate Newton's law of viscosity. Explain the importance of viscosity in fluid motion. Describe the effects of temperature on viscosity of water and that of air? Discuss hyd

The Circular Orbits The bounded motion of a particle in a central force is in general an ellipse given by   where eccentricity e is related to semi-major and minor axes a

Differentiate between perfect, deficient and redundant trusses

Figure presents a gearbox that you are going to design. The input shaft rotates at n1= 1500 rpm in a counterclockwise direction. The gearbox is needed to be designed sothat the out

how we can design a shaft for gear box