Question

1.A car travels 55 km distance in 1.5h .Calculate its speed
2. A train moves with a speed of 40km/h in 5h. Calculate the distance travelled by the train
If a simple pendulum produce 30 oscillation in 6 sec. Calculate the time period.

Answer 1

Solution:-1

• Distance=55km
• Time=1.5h

We know

$\boxed{\sf Speed=\dfrac{Distance}{Time}}$

$\\ \sf\longmapsto Speed=\dfrac{55}{1.5}$

$\\ \sf\longmapsto Speed=36.6km/h$

Solution:2

• Speed=40km/h
• Time=5h

$\\ \sf\longmapsto Distance=Speed\times Time$

$\\ \sf\longmapsto Distance=40\times 5$

$\\ \sf\longmapsto Distance=200km$

Solution:3

• No of oscillations =30
• Time=6s

We know

$\boxed{\sf Time\:period=\dfrac{No\:of\:Oscillations}{Time}}$

$\\ \sf\longmapsto Time\:Period=\dfrac{30}{6}$

$\\ \sf\longmapsto Time\:period=5$