Question

Q 6 a) Mike drives his car 60 km in 30 minutes. What is its average speed in kilometers per hour?













b) Convert 72km/hr into m/sec

Answer 1

Answer:

m, 65 69894255.5659466464694649466465

Answer 2

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Given thαt ,

• Mike drives his car 60 km in 30 minutes.

☯️ We need to find its average speed in kilometers per hour.

________

let the average speed in km/hr be x

according to the question,

$\boxed{ \sf speed \: = \frac{distance}{time} }$

• Time = 30 mins = 0.5 hours

$: \implies \sf speed = \frac{60}{0.5}$

$: \implies \sf speed = 120km/hr$

hence , The average speed of Mike is 120 km/hr

________

b) Convert 72km/hr into m/sec

☯️ we need to convert 72km/hr into m/sec.

• To convert km/hr to m/sec we need to multiply the number by 5 and then divide it by 18.

according to the question,

$: \implies \sf 72 × \frac{5}{18}$

$: \implies \sf 4 × 5$

$: \implies \sf 20$

hence , 72 km/hr = 20 m/sec.

________