Q36 of 43 Page 85

Component of vector A = 2i + 3j along the direction of i–j is?

To Find : Component of along =

Where,










Unit vector in direction of




Component of is along


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34

A grasshopper can jump a maximum horizontal distance of 40 cm. If it spends negligible time on the ground then in this case its speed along the horizontal road will be?

 35

An aeroplane takes off at an angle of 30° to the horizontal. If the component of its velocity along the horizontal is 250 kmhr–1, what is the actual velocity? Find its vertical component.

 37

A blind person after walking 10 steps in one direction each of length 80cm turns randomly to the left or to the right by 90°. After walking a total 40 steps the maximum possible displacement of person from his starting position could be

(a) 320 m


(b) 2.32 m


(c)


(d) 16√2 m

38

A projectile is thrown with initial velocity ms–1. If the range is twice the maximum height then what will be the ans and how?