Gamma Question Bank for Engineering Physics>Chapter 3 - Motion in a Plane>Assignment>Q 6

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Two forces each numerically equal to $10$ dynes are acting as shown in the following figure, then the resultant is

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Important Questions on Motion in a Plane

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IMPORTANT

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

A person moves

30 m

North, then

20 m

east, then

30 \sqrt{2} m

south west, his displacement is

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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