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Class XI Physics Kinematics 3

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Question 1

Water drops are falling from a water tap at a regular interval of one second; such that when first drop reaches the ground, the fourth drop just leaves the water tap. Find height of water tap.
[g = 10 m/s²]

Question 2

Six particles are placed on the corners of a regular hexagon of side 4 m. Each starts from rest with a constant speed of 10 m/s such that direction of motion of each is always pointing towards the next in order. They finally converge. The distance covered by each particle before they converge is

Question 3

To an observer moving along East, the wind appears to blow from North. If he doubles his speed, the air would appear to come from -

Question 4

A boat man could row his boat with a speed 10m/sec. He wants to take his boat from P to a point Q just opposite on the other bank of the river flowing at a speed 4m/sec. He should row his boat –

Question 5

A motor boat covers the distance between two spots on the river in t₁ = 8 hr and t₂ = 12 hr downstream and upstream respectively. The time required for the boat to cover this distance in still water will be-

Question 6

Two particles A and B move from rest along a straight line with constant acceleration f and f^'respectively. If A takes m sec. more than B and describes ‘n’ units more than B in acquiring the same speed then

Question 7

A conical pendulum of length

makes an angle

w.r.t. Z-axis and moves in a circle in the XY plane. The radius of the circle is 0.4 m and its center is vertically below O. The speed of the pendulum, in its circular path, will be: (Take g = 10 ms^-2)

Question 8

Consider two vectors

= 2

+ 5

and

= 3

+ 4

The magnitude of the scalar product of these two vectors is -

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Oct 8JEE & BITSAT