Question

and the other is fixed to a nail. If the time taken to
draw a half circle and a full circle with the pencil is 2
2.18
Chapter 2
42. A pencil is tied to one end of a string of length 5 cm
34. Redraw the following figure to scale and find out the
distance and displacement of a particle moving along
the path A - B - C - D.
5 m
and 4 seconds, respectively, find the speed and velocity
(a) to draw half circle.
(b) to draw full circle.
43. Write short notes on acceleration and deceleration.
Give examples.
44. A particle travelled along a semi-circular path A-C
B as shown in the figure below. The radius of the
semi-circular path is 7 m.
120°C
5 m
30°
A
2 m
B
С
A
7 m
B.
35. Tabulate the differences between distance and
displacement
36. A crow picks up pebbles and puts them into a pot
which is 10 m away from the pot. In doing so, it
makes 5 trips within 80 seconds. What is the average
speed of the crow?
37. Differentiate between speed and velocity.
38. Write short notes on instantaneous speed and instan-
taneous velocity. Give examples.
39. Write short notes on uniform speed and uniform
velocity. Give examples.
40. A bike starting from rest picks up a velocity of 72 km
over a distance of 40 m. Calculate its acceleration.
41. Explain, with an example, how a particle moving
with uniform speed has variable velocity.
(a) Find the distance travelled by the particle.
(b) Find the displacement (magnitude and direction).
(c) What would be these quantities if the particle
completes the circle?
45. In the previous question, find the speed and velocity
in each case if the time taken
(a) to travel from A to B is 11 s.
(b) to complete the circle is 22 s.
h-1
Essay Type Questions​

Answer 1

Answer:

it is very long question