Question

A car moves at the speed of 80 km per hour What is the speed of the car in meters per second​

Answer 1

Answer:

Correct option is

A

22

9

2

m/sec

Speed=80km/hr=(80×

18

5

)m/sec=22

9

2

m/sec.

Answer 2

Given that , A car moves at the speed of 80 km per hour .

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀¤ Finding the Speed in meters per second :

⠀⠀⠀Given , The speed of car is 80 km/hr .

As , We know that ,

• For changing the speed from km / hr ( km per hour ) to m / s ( meters per second ) we multiply the given speed by 5 / 18 .

$\qquad \dashrightarrow \sf Speed \:\:=\:\: 80 \: km/hr \:\:$

$\qquad \dashrightarrow \sf Speed \:\:=\:\bigg(\: 80 \:\times \:\dfrac{5}{18}\:\:\bigg) \: m/s \:\:$

$\qquad \dashrightarrow \sf Speed \:\:=\:\bigg(\: \cancel {80} \:\times \:\dfrac{5}{\cancel {18}}\:\:\bigg) \: m/s \:\:$

$\qquad \dashrightarrow \sf Speed \:\:=\:\bigg(\: 4.44 \:\times \:5\:\:\bigg) \: m/s \:\:$⠀⠀

$\qquad \dashrightarrow \sf Speed \:\:=\:\bigg(\: 22.22\:\:\bigg) \: m/s \:\:$

$\qquad \dashrightarrow \sf Speed \:\:=\:\: 22.22\:\:\: m/s \:\:$⠀⠀⠀⠀⠀⠀⠀

$\qquad \therefore \pmb{\underline{\purple{\frak{\: Speed \:\:=\:\: 22.22\:\:\: m/s\:\: }}} }\:\:\:\bigstar$

$\qquad \therefore \:\underline {\sf Hence, \:The \: speed \:of \:car \:in \:meters \:per \:second \:(\:m/s\:)\:is \:\bf 22.22\:\:\: m/s\:\:}$