Displacement

Q.

A driver of a car traveling at 52 km h^-1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h^-1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars traveled farther after the brakes were applied?

Q. An object is moving along the circumference of a circular track of radius R. What is the displacement of the object when it covers 3/4th of its circumference?

Q.

A particle moves along the sides AB, BC, and CD of a square of side 25 m with a speed of 15. Its average velocity is________.

1. 15 m/s

2. 10 m/s

3. 7.5 m/s

4. 5 m/s

Q. 15.A particle is moving along a circle such that it complete one revolution in 40 seconds. In 2 minutes 20 seconds, the ratio displacement/distance is??

Q. 45. Which of the following sets of displacements might be capable of returning a car to its starting point? ( a) 4, 6, 8, and 15 km. (b) 10, 30, 50 and 120 km. (c) 5, 10, 30, and 50 km. (d) 50, 50, 75 and 200 km.

Q.

When the magnitude of displacement is equal to the minimum possible distance between two positions?

Q.

The dimensions (measurements) of a hall are $12m,4m,and3m$, respectively. An ant starts at one corner of the hall, travels only along the edges, and reaches a diagonally opposite corner, taking the shortest possible route. Find the distance traveled by the ant and its magnitude of displacement.

Q.

A man moves to go 50 m due south, 40 m due west, and 20 m due north to reach a field. Find what is his displacement from his house to the field?

Q.

Work done by gravitational force on a man, in lifting a bucket out of the well by rope tied to the bucket is

1. positive

2. infinity

3. negative

4. zero

Q.

Define the term displacement. Is it a vector quantity or a scalar quantity?

Q.

In the case of a moving body

1. Displacement > Distance

2. Displacement < Distance

3. Displacement ≥ Distance

4. Displacement ≤ Distance

Q.

What do you mean by displacement?

Q. A person cover 3/4 part of circular path then what is displacement if radius is r

Q. the displacement of a particle from a point having position vector 2i+4j to another point having position vector 5i+j=

Q. A particle is moving in a circular path of radius $R$, the displacement of the particle after completing half of the circular path will be -

1. Zero
2. $\pi R$
3. $2R$
4. $2\pi R$

Q.

Displacement of a body from its initial position can be greater than the distance covered by it.

1. True

2. False

Q.

A child moves a toy car, takes it round, and brings it back to the starting point. What is the displacement of the car?

Q. Choose the correct statement out of the following

1. Distance and displacement can never be equal.
2. Velocity of a moving body is always greater than speed.
3. Displacement is either less than or equal to distance covered.
4. Speed of a moving body is its velocity in a given direction.

Q. Assertion : The work done in bringing a body down from the top to the base along a frictionless inclined plane is same as the work done in bringing it down the vertical side. Reason :The gravitation force on the body along the inclined plane is the same as that along the vertical side

Q. 55.The position x of a particle moving along x-axis varies with time as x=4t-2tsquare where x is in metre and t is in second. The rate of change of position with is zero at

Q. Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20km/hr in the direction A to B notices that a bus goes past him every 18min in the direction of his motion, and every 6min in the opposite direction. What is the period T of the bus service and with what speed (assumed cons†an t) do the buses ply on the road?

Q. 31.if a body covers 1/3 part of circle then find displacement

Q. A solid sphere of mass M and radius R has to be disintegrated into infinite point masses at infinite separation. The work done for this process will be(G - universal gravitational constant)

Q.

What is the average speed and average velocity at t = 30s respectively?

1. 1 m/s, - 0.33 m/s

2. 1m/s, -1m/s

3. 2m/s, -0.25 m/s

4. 2 m/s, 0

Q. a particle is moving in xy plane in a circular path with centre at origin . if at an ins†an t the position of particle is given by 1/\sqrt{2 }

Q. Choose the correct option:
i. Distance can be negative.
ii. Displacement can't be greater than Distance.
iii. Displacement is always less than Distance.
iv. Displacement can be equal to Distance.

1. ii & iii
2. ii & iv
3. i & iii
4. ii, iii & iv

Q. ntA particle moves in a circular path of radius r, in half of its period. Its displacement and distance covered aren

Q. A man goes $10\text{m}$ towards North, then $20\text{m}$ towards east. Then, total length of displacement is

1. $22.4\text{m}$
2. $25\text{m}$
3. $25.5\text{m}$
4. $30\text{m}$

Q. 100. A particle is moving in a circle of radius 1m . Show the 30degree north east position of particle from centre

Q.

Distance and displacement are equal to each other if the body moves

1. along a circle

2. along an ellipse

3. along a straight line

4. none of the above