please tell me the solution and answer both and show me the solution please help me and just like your sister and I have no one to guide me and I am very weak in maths please help me I am think that I am your sister.
Answers
Answer:
Given: 90 km/hr
216 km /hr
We have to express km /hr into m/sec
By using formula: 5/18 m/ sec
90 km /hr = 90×5/18
= 25m/sec
216 km / hr = 216×5/18
= 60m/ sec
Q3I. Given,
distance covered by a car = 212 km
Time taken by car to covered the distance = 4 hours
Now,
we have to find the speed of the car
By using formula: speed= distance/time
According to the question
Speed= 212/4 km/hr
54 km/ hr
Hence,
Speed of the car is 54km/ hr
Q3II. Given,
distance travelled by a aeroplane = 3120 km
Time taken by the aeroplane to travelled one city to another = 3 hours
Now, we have to find the speed of the aeroplane
By using formula: speed= distance / time
According to the question
Speed= 3120/3 km/hr
1040 km/ hr
Hence, speed of the car is 1040 km/hr
Q4. Given,
Uniform speed of the car = 48km/hr
Time taken by the car to travelled = 12 hours
Now, we have to find distance travelled by the car
By using formula: speed × time = distance
According to the question
Distance = 48 ×12 km
= 576km
Hence,
Distance travelled by the car is 576km