When the velocity of a body is variable, then:

1. its speed may be constant.

2. its acceleration may be constant.

3. its average acceleration may be constant.

4. All of the above

Subtopic:  Acceleration |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

An object is moving with variable speed, then

(1) Its velocity may be zero

(2) Its velocity must be variable

(3) Its acceleration may be zero

(4) Its velocity must be constant

Subtopic:  Acceleration |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The position of a particle moving along x-axis is given by x=10t-2t2. Then the time (t) at which it will momently come to rest is

1. 0

2. 2.5 s

3. 5 s

4. 10 s

Subtopic:  Instantaneous Speed & Instantaneous Velocity |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

advertisementadvertisement

If the displacement of a particle varies with time as x=t+7, then

(1) Velocity of the particle is inversely proportional to t

(2) Velocity of the particle is proportional to t2

(3) Velocity of the particle is proportional to t

(4) The particle moves with constant acceleration.

Subtopic:  Acceleration |
 73%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The initial velocity of a particle is u (at t=0) and the acceleration a is given by αt3/2. Which of the following relations is valid?

(1) v=u+αt3/2

(2) v=u+3αt32

(3) v=u+25αt5/2

(4) v=u+αt5/2

Subtopic:  Acceleration |
 58%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The position x of a particle moving along the x-axis varies with time t as x=A sin(ωt) where A and ω are positive constants. The acceleration a of the particle varies with its position (x) as

(1) a = Ax

(2) a=-ω2x

(3) a=Aωx

(4) a=ω2×A

Subtopic:  Acceleration |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

advertisementadvertisement

A particle moves in a straight line and its position x at time t is given by x= 2 + t. Its acceleration is given by

(1) -2x3

(2) -12x2

(3) -14x3

(4) 1x2

Subtopic:  Acceleration |
 61%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A body is moving with variable acceleration (a) along a straight line. The average acceleration of the body in time interval t1 to t2 is

(1) at2+t12

(2) at2-t12

(3) t1t2adtt2+t1

(4) t1t2adtt2-t1

Subtopic:  Acceleration |
 63%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The position of a particle moving along the x-axis given by x=-2t3+3t2+5m. The acceleration of a particle at the instant its velocity becomes zero is

(1) 12 m/s2

(2) -12 m/s2

(3) -6  m/s2

(4) Zero

Subtopic:  Acceleration |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

advertisementadvertisement

A particle moves with velocity v1 for time t1 and v2 for time t2 along a straight line. The magnitude of its average acceleration is:

1. v2-v1t1-t2

2. v2-v1t1+t2

3. v2-v1t2-t1

4. v1+v2t1-t2

Subtopic:  Acceleration |
 54%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh