Question

3. (a) A cockroach covers a distance of 30 m in 1.5 minutes. What is the speed of the cockroach?
(b) Find the odd one out. Give a reason for your choice :
(i) length, time period, frequency, acceleration.
(ü) speed, velocity, acceleration, mass.
(c) What will happen to the time period of a simple pendulum, if its bob's mass is doubled?​

Answer 1

Answer:

length, time period, frequency, acceleration.

(ü) speed, velocity, acceleration, mass.

(c) What will happen to the time period of a simple

Answer 2

1)=distance = 30m

time = 1.5 min = 1.5 *60 = 90 secs

speed = distance / time

= 30 / 90

= 1/3 m/s

I don't know the 2 answer sorry