7. A scooter acquires a speed of 18km/h in 10 seconds. What is its acceleration?
8. What can you say about the motion of a body if
(a) Its displacement-time graph is a straight line, with some slope?
(b) Its velocity-time graph is a straight line, with some 10. A bus decreases its speed from 72km/h to 54km/h in 10 seconds. Calculate the acceleration of the bus.
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Explanation:
7.
18 × 5 / 18 = 5m/s
a = velocity / time = 5 / 10 = 2 m/s^2
Ans. Acceleration is 2 m/s^2
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