Question

a) Distance = 90 km, time=2 hours
c) Distance = 800 m, time = 5 minutes (d)
(b​

Answer 1

Answer:

a) 750 m/s , c) 160 m/s

Step-by-step explanation:

Formula :

• Speed = Distance / Time
• V = D / T

a) First converting 90 km into m and 2hrs into minutes

• 1 km = 1000m
• 90km = 90 × 1000 = 90,000
• 1 hr = 60 mins
• 2hrs = 2 × 60 = 120

◇V = D / T

◇V = 90,000 / 120

= 750 m/s

c) As the 800m and 5 min are already in cgs form..

◇ V = D / T

◇ V = 800 / 5

= 160 m/s

Hope it helps u