A motorcyclist drives from point A to point B with a uniform speed of 30 km h⁻¹ and returns back to point A with a uniform speed of 20 km h⁻¹. Find the average speed of the motorcyclist.
For a moving object, the numerical ratio of displacement to distance is:
A body is thrown vertically upwards with a velocity and caught back.
Two cars started simultaneously towards each other from towns A and B, which are 480 km apart from each other. The first car started from town A and reached the town B in 8 hours. The second car started from town B and reached the town A in 12 hours. If both the cars moved with uniform velocities without any break, find out when the two cars cross each other after starting and at what distance from the town A?
An aeroplane moves 400 m towards the north, 300 m towards the west and then 1200 m vertically upwards. What is the magnitude of its total displacement?
As shown in Fig. 4.5, a ball is thrown vertically upwards from O. It moves up straight till B and then falls back to O. Can this be considered a motion in a straight line?
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