Question

6. The period of oscillation of a simple pendulum
which takes 38 s for 20 oscillations is
a) 38 s b) 765 C) 3.85 d) 1.9 s

7. Which of these cannot be a unit of speed?
a) m/s
b) km/h
c) km/min
d) s/m

8. 20 m/s is equal to
a) 5.5 km/h
c) 72 km/h
b) 48 km/h
d) 40 km/h​

Answer 1

Answer:

6.=b option 765

7.=d opion s/m

8.a.5.5 km/h