SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 13 - Motion and Time>EXERCISES>Q 9

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The basic unit of speed is:

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Important Questions on Motion and Time

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7th Jammu and Kashmir Board

IMPORTANT

SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 13 - Motion and Time>EXERCISES>Q 2

Every object moves with a constant speed.

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SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 13 - Motion and Time>EXERCISES>Q 10

A car moves with a speed of

40 km / h

for

15 \min

and then with a Speed of

60 km / h

for the next

15 \min

. The total distance covered by the car is

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SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 13 - Motion and Time>EXERCISES>Q 11

Suppose the two photographs, shown in Fig.1 and Fig. 2, had been taken at an interval of $10 seconds$ . If a distance of $100 m$ is shown by $1 cm$ in these photographs, calculate the speed of the blue car.

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SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 13 - Motion and Time>EXERCISES>Q 12

Figure shows the distance-time graph for the motion of two vehicles A and B. Which one of them is moving faster?

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SCIENCE A TEXTBOOK FOR CLASS 7>Chapter 13 - Motion and Time>EXERCISES>Q 13

Which of the following distance-time graphs shows a truck moving with a speed which is not constant?