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Question (1)

QN0034780

The graph between displacement and time for a particle moving with uniform acceleration is a/an

(A)
straight line with a positive slope
(B)
parabola
(C)
ellipse
(D)
straight line parallel to time axis

Correct Answer: B

Explanation:

For a particle moving with uniform acceleration the displacement-time graph is a parabola.

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Question (2)

QN0034781

In a car race on straight road, car takes a time less than car B at the finish and passes finishing point with a speed ' ' more than of car B. Both the cars start from rest and travel with constant acceleration and respectively. Then ' ' is equal to:

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Let time taken by to reach finishing point is Time taken by to reach finishing point

Putting this value of in equation (i)

or,

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Question (3)

QN0034782

Velocity time curve for a body projected vertically upwards is

(A)
parabola
(B)
ellipse
(C)
hyperbola
(D)
straight line

Correct Answer: D

Explanation:

Velocity time curve will be a straight line as shown:

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Question (4)

QN0034783

A bus starts moving with acceleration . A cyclist 96 behind the bus starts simultaneously towards the bus at . After what time will he be able to overtake the bus?

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

At the highest point .

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Question (5)

QN0034784

Stopping distance of a moving vehicle is directly proportional to

(A)
square of the initial velocity
(B)
square of the initial acceleration
(C)
the initial velocity
(D)
the initial acceleration

Correct Answer: A

Explanation:

Let be the distance travelled by the vehicle before it stops.

Final velocity , initial velocity

Using equation of motion

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Question (6)

QN0034785

Which of the following graphs gives the equation

(A)
(B)
(C)
(D)
None of these

Correct Answer: C

Explanation:

Stopping distance,

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Question (7)

QN0034786

If a train travelling at is to be brought to rest in a distance of , then its retardation should be

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

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Question (8)

QN0034787

A body starts from rest and travels ' ' in second, then acceleration is

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

or,

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Question (9)

QN0034788

A bullet fired into a wooden block loses half of its velocity after penetrating . It comes to rest after penetrating a further distance of

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

For first part of penetration, by equation of motion

For latter part of penetration

(Using (i))

or

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Question (10)

QN0034789

A body covers meters in and seconds respectively. The body starts

(A)
from rest and moves with uniform velocity
(B)
from rest and moves with uniform acceleration
(C)
with an initial velocity and moves with uniform acceleration
(D)
with an initial velocity and moves with uniform velocity

Correct Answer: C

Explanation:

The distance covered in second is

where is initial velocity is acceleration

then

From eqs. (i) and (ii) we get

The body starts with initial velocity and moves with uniform acceleration

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Question (1)

The graph between displacement and time for a particle moving with uniform acceleration is a/an

Explanation:

Link:

Question (2)

In a car race on straight road, car takes a time less than car B at the finish and passes finishing point with a speed ' ' more than of car B. Both the cars start from rest and travel with constant acceleration and respectively. Then ' ' is equal to:

Explanation:

Link:

Question (3)

Velocity time curve for a body projected vertically upwards is

Explanation:

Link:

Question (4)

A bus starts moving with acceleration . A cyclist 96 behind the bus starts simultaneously towards the bus at . After what time will he be able to overtake the bus?

Explanation:

Link:

Question (5)

Stopping distance of a moving vehicle is directly proportional to

Explanation:

Link:

Question (6)

Which of the following graphs gives the equation

Explanation:

Link:

Question (7)

If a train travelling at is to be brought to rest in a distance of , then its retardation should be

Explanation:

Link:

Question (8)

A body starts from rest and travels ' ' in second, then acceleration is

Explanation:

Link:

Question (9)

A bullet fired into a wooden block loses half of its velocity after penetrating . It comes to rest after penetrating a further distance of

Explanation:

Link:

Question (10)

A body covers meters in and seconds respectively. The body starts

Explanation:

Link:

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