Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 7

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A person moves $30 m$ North, then $20 m$ east, then $30 \sqrt{2} m$ south west, his displacement is

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Important Questions on Motion in a Plane

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 8

The position co-ordinates of an object are given by

x = 2 t^{2}, y = t^{2} - 4 t, z = 3 t - 5 .

The average velocity of the particle during the interval

0 - 1 s

is

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 9

If two vectors

\vec{a}

and

\vec{b}

be such that

| \vec{a} + \vec{b} | = | \vec{a} - \vec{b} |,

then the angle between them is

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 10

At what angle the two vectors of magnitude

(P + Q)

and

(P - Q)

should act so that their resultant is

\sqrt{P^{2} + Q^{2}} ?

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 11

Which of the following pair of displacement cannot be added to produce a resultant displacement of

2 m ?

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 12

The maximum and minimum magnitudes of the resultant of two vectors of magnitudes

P

and

Q

are in the ratio

3 : 1

. Which of the following relations is true?

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 13

The directions of three forces

10 N, 20 N

and

30 N

acting at a point are parallel to the sides of an equilateral triangle taken in order. The magnitude of their resultant is

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 14

A particle is thrown with the speed

u

at an angle

α

with the horizontal. When the particle makes an angle

β

with the horizontal, its speed will be

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Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 15

A projectile has same range for two angles of projection. If times of flight in two cases are

t_{1}

and

t_{2}

then the range of the projectile is