# CBSE Class 11-Physics: Motion in One Dimension Assignment 2

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Question 1:

A bus start at Station A from rest with uniform acceleration .Bus moves along a straight line

1. Find the distance moved by the bus in ?

2. At what time, its velocity becomes ?

3. How much time it will take to cover a distance of

Question 2

An object is moving along a straight line. The motion of that object is described by where are constants and is in meters and t is in sec.

1. Find the displacement at

2. Find the velocity at and sec

3. Find the acceleration at and sec

Question 3

An object is thrown vertically upward with an initial velocity of . Two second later another object is thrown upward with the same velocity

Find out following

1. At what height they meet

2. What is the time when they meet

3. What are the velocities of each object when they meet

Question 4

A particle moves along the x-axis according to the following equation x=pt (1-qt) where p and q are constants and .

Let take as the unit vector across x-axis

1. Find out the velocity and acceleration vector for the particle

2. What time it will reach its initial point and what will be the total distance traversed

Question 5

A Balloon rises from rest on the ground vertically upwards with a constant acceleration . An object is dropped from the balloon when it has risen to the height h.

Find out the time taken by the object to reach the ground.

Question 6

A Police Motorcycle is moving on a highway with a speed fires a bullet at thief motorcycle speeding away in the same direction with a speed . lf the muzzle speed of the bullet is find out the following

1. What is the speed of the bullet with respect to the observer sitting on the ground?

2. What speed will the bullet hit the thief

3 What will the speed of the bullet with respect to other police motorcycle moving in the same direction at a speed of

Question 7

A nut comes loose from a bolt on the bottom of the elevator as the elevator is moving up the shaft at . The nut strikes the bottom of the shaft in sec

Find out the following

a. How far from bottom of the shaft was the elevator when the nut fell off?

b. How far above the bottom of the shaft was the nut. after the fell off.?

c. How far above the bottom of the shaft was the elevator when the nut fell on the ground?

d. At what height above the bottom of the shaft, nut has zero velocity after the fell off?

e. what is the total distance travelled by nut in it motion after the fell off? Given