Exercise 21 C
Question 1
1. Match each graph with the correct description :
<fig>
(a) The car was travelling at a constant speed and then stopped.
(b) The car moved at a constant speed throughout the journey.
(c) The car was travelling at a certain speed, and then increased that speed.
(d) The car was stationary at first and then moved off at a constant speed.
2. The graph shows an aeroplane's flight.
(i) What does 1 small square represent :
(a) horizontally
(b) vertically?
(ii) For how long was the aeroplane climbing?
(iii) What was the aeroplane's speed whilst climbing ?
(iv) How long was the plane in level flight?
(v) How long did the whole flight take?
3. Akshat was travelling in his car to a meeting. He set off from home at 6 a.m. and stopped on the way for a break. This distance-time graph shows his journey. Read the graph and answer the questions given below :
(i) At what time did he
(a) stop for his break ?
(b) set off after his break?
(c) get to his meeting place ?
(ii) At what average speed was he travelling
(a) over the first hour?
(b) over the second hour?
(c) for the last part of his journey ?
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