11th Physics Weekly Test - 2 (Kinematics)

MABS Institution

11th Physics Weekly Test - 2 (Kinematics)-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

Abus 150m long is moving with a speed of 90 km/h.ln what time shall it cross 850m long bridge?

Calculate the average velocity of the particle whose position vector changes from \(\overrightarrow { { r }_{ 1 } } =5\hat { i } +6\hat { j } \) to \(\overrightarrow { { r }_{ 2 } } =2\hat { i } +3\hat { j } \) in a time 5 second.

What is position vector? Explain.

Define momentum. (or) Define leniar momentum. Give its unit.

Give any three example for vector product of two vectors.

Define non-uniform motion.

When the angle of elevation of a gun are 60° and 30° respectively. The height it shoots are h₁ and h₂ respectively. Find the ratio h₁/h₂.

When the angle between two vectors of equal magnitudes is \(\frac{2\pi}{3}\), prove that the magnitude of the resultant is equal to either.

Distinguish between average velocity and average speed.

What is the angle between velocity and acceleration at the highest point of a projectile motion?

Part - B

Generic 5 - Answer All Question

Write the important properties of vector (cross) product?

Explain how a vector can be resolved into its rectangular components in two dimension.

A particle moves in a circle of radius 4.0 cm clockwise at constant speed of 2 cms^-1. If \(\hat x\) and \(\hat y\) are unit acceleration vectors along x-axis and y-axis respectively (in cms^-2), find the acceleration of the particle at the instant half way between P and Q.
Explain in detail the triangle law of addition. (or) Explain triangular law of addition method.

Calculate the vector which has to be added to the resultant of \(\overrightarrow { A } =2\overrightarrow { i } -3\overrightarrow { j } -4\overrightarrow { k } \) and \(\overrightarrow { B } =6\hat { i } -4\hat { j } -4\hat { k } \) gives unit vector along x - direction.

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11th Physics Weekly Test - 2 (Kinematics)

MABS Institution

11th Physics Weekly Test - 2 (Kinematics)-Aug 2020

Part - A

Generic 2 - Answer All Question

Abus 150m long is moving with a speed of 90 km/h.ln what time shall it cross 850m long bridge?

Calculate the average velocity of the particle whose position vector changes from \(\overrightarrow { { r }_{ 1 } } =5\hat { i } +6\hat { j } \) to \(\overrightarrow { { r }_{ 2 } } =2\hat { i } +3\hat { j } \) in a time 5 second.

What is position vector? Explain.

Define momentum. (or) Define leniar momentum. Give its unit.

Give any three example for vector product of two vectors.

Define non-uniform motion.

When the angle of elevation of a gun are 60° and 30° respectively. The height it shoots are h1 and h2 respectively. Find the ratio h1/h2.

When the angle between two vectors of equal magnitudes is \(\frac{2\pi}{3}\), prove that the magnitude of the resultant is equal to either.

Distinguish between average velocity and average speed.

What is the angle between velocity and acceleration at the highest point of a projectile motion?

Part - B

Generic 5 - Answer All Question

Write the important properties of vector (cross) product?

Explain how a vector can be resolved into its rectangular components in two dimension.

A particle moves in a circle of radius 4.0 cm clockwise at constant speed of 2 cms-1. If \(\hat x\) and \(\hat y\) are unit acceleration vectors along x-axis and y-axis respectively (in cms-2 ), find the acceleration of the particle at the instant half way between P and Q.

Explain in detail the triangle law of addition. (or) Explain triangular law of addition method.

Calculate the vector which has to be added to the resultant of \(\overrightarrow { A } =2\overrightarrow { i } -3\overrightarrow { j } -4\overrightarrow { k } \) and \(\overrightarrow { B } =6\hat { i } -4\hat { j } -4\hat { k } \) gives unit vector along x - direction.

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When the angle of elevation of a gun are 60° and 30° respectively. The height it shoots are h₁ and h₂ respectively. Find the ratio h₁/h₂.

A particle moves in a circle of radius 4.0 cm clockwise at constant speed of 2 cms^-1. If \(\hat x\) and \(\hat y\) are unit acceleration vectors along x-axis and y-axis respectively (in cms^-2), find the acceleration of the particle at the instant half way between P and Q.