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Class XI Physics Kinematics 5

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Question 1

Which of the following is a vector ?

Question 2

In the adjoining vector diagram, what is the angle (in degree) between

and

? (Given: C = B/2).

Question 3

The magnitude of vectors

and

are respectively 12, 5 and 13 units and

, then the angle between

and

is -

Question 4

A child pulls a box with a force of 200N at an angle of 30 º above the horizontal. Then the horizontal and vertical components of the force are –

Question 5

A displacement vector, at an angle of 30 º with y-axis has an x-component of 10 units. Then the magnitude of the vector is -

Question 6

A car A is going north-east at 80km/hr and another car B is going south-east at 60km/hr. Then the direction of the velocity of A relative to B makes with the north an angle α such that tanα is –

Question 7

In the figure as shown, the pulley is light and massless thread is having two masses m₁ and m₃ at their ends. Then the acceleration of center of mass of two blocks is (Assuming m₃ > m₁)
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Question 8

A parachute falls from an airplane moving with uniform horizontal velocity V. At the moment he just touches the ground-

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Sep 20JEE & BITSAT