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D. Answer the following questions in brief. A boy walks to his school with a constant speed of 4 km/h and reaches there in 30 minutes. Find the distance of the school from his house. The distance between two stations is 216 km. A bus takes 4 hours to cover this distance. Calculate the average speed of the bus in km/hour. Two Cars, A and B, (starting, at the same time, from the same point) are moving with average speeds of 40 km/h and 50 km/h, respectively, in the same direction. Find how far will Car B be from Car A after 3 hours. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. Find the total distance covered by the car in 3. 4. these 30 minutes. 5. Define the term 'Periodic motion. Give two examples of periodic motions that can be used to measure time. |
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Answer» Hi this question was my class 6 physics please mark me brainliest and LIKE all my answers and foll.ow me I am Chinmaya VIDYALAYA schoolExplanation:1 . GIVEN speed is 4km/h time is 30 minutes which is 30x1/2hdistance=?distance is speed x time = 4km/h x 1/2 hour distance is 2 km2.distance is 216 km time taken 4 haverage speed is distance/time=216/4=54 kmwhich is 54 km/h3.the answer is mentioned in the pic you can see and write4.the answer is mentioned in the pic you can see and write5.Periodic motion, in physics, motion repeated in equal intervals of time. Periodic motion is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing in motion, the Earth in its orbit around the SUN, and a water wave.hope it helps THANKS for asking questions |
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