If the velocity of a particle moving on x-axis is given by v=3t2-12t+6. At which time is the acceleration of particle zero?

(A)  2 sec

(B)  2+2 sec

(C)  2-2 sec

(D)  zero

Concept Questions :-

Differentiation
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Momentum of a body moving in a straight line is p=t2+2t+1 kg m/s. Find the force acting on a body at t=2 sec

(A)  6 N

(B)  8 N

(C)  4 N

(D)  2 N

Concept Questions :-

Differentiation
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


A particle moves along straight line such that at time t its position from a fixed point O on the line is x=3t2-2. The velocity of the particle when t=2 is:

(A)  8 ms-1

(B)  4 ms-1

(C)  12 ms-1

(D)  0

Concept Questions :-

Differentiation
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Coordinates of a moving particle are given by x=ct2 and y=bt2. The speed of the particle is given by

(A)  2t c+b

(B)  2t c2-b2

(C)  t c2+b2

(D)  2t c2+b2

Concept Questions :-

Differentiation
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The x and y components of vector A are 4m and 6m respectively. The x, y components of vector A+B are 10m and 9m respectively. The length of B is ______ and angle that B makes with the x axis is given by _______.

(A)  0.45m, tan-11/2

(B)  4.5m, tan-11/2

(C)  45m, tan-11/2

(D)  45m, tan-11/2

Concept Questions :-

Resultant of Vectors
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


A particle travels with speed 50 m/s from the point (3, 7) in a direction 7i^-24j^. Find its position vector after 3 seconds.

(A)  151i^+45j^

(B)  45i^-137j^

(C)  151i^+45j^

(D)  4.5i^-151j^

Concept Questions :-

Resultant of Vectors
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


If A=2i^+j^ & B=i^-j^ . Find component of A along B & perpendicular to B.

1.  i^-j^2, 32i^+j^

2.  i^-j^2,- 23i^+j^

3.  i^-j^2, -32i^-j^

4.  i^-j^2, 23i^-j^

Concept Questions :-

Resolution of vectors
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


If a is a vector and x is a non-zero scalar, then

(A) xa is a vector in the direction of a

(B)  xa is a vector collinear to a

(C)  xa and a have independent directions

(D)  xa is a vector perpendicular to a

Concept Questions :-

Scalar Product
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


A vector that is perpendicular to both the vectors a=i^-2j^+k^ and b=i^-j^+k^ is

(A)  -i^+k^

(B)  -i^-2j^+k^

(C)  i^-2j^+k^

(D)  i^+k^

Concept Questions :-

Scalar Product
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


If θ is the angle between vectors a and b, and |a×b|=a.b, then θ is equal to

(A)  0°

(B)  180°

(C)  135°

(D)  45°

Concept Questions :-

Vector Product
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: