Question

A passenger lift starts from rest, accelerates uniformly and attains a speed of 4.6m/s in 2s. This speed is maintained for the next 6s. Then the lift undergoes uniform deceleration and stops in the next 2s. Draw the velocity-time graph of the lift and answer the following questions:
(i). Calculate the acceleration in 2 seconds.
(ii). What is the acceleration during 2 seconds to 6 seconds?
(iii). What is the retardation during the last two seconds?
(iv). Calculate the total distance covered by the lift in 10s.
(v). What is the average speed during the journey?

Answer 1

Answer:

Give examples of the undermentioned shapes from nature/surroundings. Use

the help of Internet in this regard. Produce at least 02 examples against each

mentioned shape (apart from book) either in the form of sticker or picture. Paste

them accordingly against the shape:

(06 Marks)

(a) Sphere

(b) Circle

(c) Ellipse

(d) Concentric circles

(e) Oval

(1) Hexagon

(g) Triangle

(h) Straight line

0. Parallel lines

(k) Point

(m) Line

(n) Plane

(p) Tilted Plane

(9) Horizontal & Vertical Planes

() Intersecting Plane

Answer 2

Answer:

i)2.3m/s

ii)0

iii)2.3m/s

iv)36.8m

v)3.68m/s

Explanation: