Question

74. A car covers a distance of 10 metres in one second, the speed of the car in km/h is:
(a) 30 km
(b) 36 km
(c) 42 km
(d) 48 km.​

Answer 1

Answer:

b. 36km

Step-by-step explanation:

Distance=S=10m

Time=t=1s

Time=t=1sSpeed=V=?

Formula

S=Vt

Solution

S=Vt

V=S/t

V=10/1

V=10ms^-1

In kilometres,

V= 10/1000

V=0.01km

For per hour,

since 1hr = 60×60 =3600s

Therefore, 0.01km × 3600s

36km

Answer 2

Answer:

(a)30km

Step-by-step explanation:

A Car covers a distance of 10m in 1s, speed of car in km/hr is 30.

Just Multiply 10m/1s with 1000m/3600s

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