Question

(a) A body moves with an average speed of 60 km/hour for 20 minutes. How much distance does
(b) A man covers a total distance of 650 km with an average speed of 52 km/hour. How much time
(c) A car covers a distance of 120 km with a speed of 60 km/hour and another 60 km with an
Solve the following numerical problems:
it cover in this time?
does he take?
average speed of 30 km/hour. Find the average speed of the car over the whole journey.
(d) A man goes from his house to a museum (a distance of 60 km) with a speed of 30 km/hour
and returns with a speed of 20 km/hour. Find his average speed over the complete journey.
(e) Which will take longer time and how much longer:
(i) an aircraft, covering a distance of 2400 km with an average speed of 800 km/hour, or
(ii) a car, covering a distance of 200 km with an average speed of 50 km/hour?​

Answer 1

Answer:

here's your answers:-

Explanation:

A)  distance = speed*time

speed = 60km/h(turn it to m/s)  = 16.666m/s

time = 20 mins

distance = 16.666*20

distance = 333.32 meters

B)  Time = distance/speed

distance = 650km

speed = 52km/h

Time = 650/52

Time = 12.5 hours

C) *type question correctly*

D) average speed = total DISTANCE/ total time

total distance = 60+60 = 120km

total time = 30km/h + 20km/h = 50 km/h

avg speed = 120/50

avg speed = 2.4 km/h

E) (i) time taken by aircraft= distance/speed

distance = 2400km

speed= 800km/h

time taken by aircraft=2400/800

time taken by aircraft = 3hours.

(ii) time taken by car = distance / speed

distance = 200km

speed= 50km/h

time taken by car = 200/50

time taken by car = 4hours.

THEREFORE THE CAR TOOK LONGER TIME BY 1 HOUR

Answer 2

Answer:

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