NEET Physics MCQ: NCERT Laws of Motion

🎯Difficulty :Hard

⚡ Time Required :4 mins

🔄Ncert Concepts :kinetic_friction, constant_speed, newton's_laws

Related Questions

1 kg body explodes into three fragments. The ratio of their masses is $1:1:3$ . The fragments of same mass move perpendicular to each other with speeds $\;30{\rm{m}}{{\rm{s}}^{ - 1}}$ , while the heavier part remains in the initial direction. The speed of heavier part is

$\frac{{10}}{{\sqrt 2 }}{\rm{m}}{{\rm{s}}^{ - 1}}$

$10\sqrt 2 {\rm{\;m}}{{\rm{s}}^{ - 1}}$

$20\sqrt 2 {\rm{\;m}}{{\rm{s}}^{ - 1}}$

$30\sqrt 2 {\rm{\;m}}{{\rm{s}}^{ - 1}}$

Question Tags

🔄Ncert Concepts :Conservation of Momentum, Vector Addition

A particle moves in x-y plane under the action of force F and the value of its linear momentum p at a given time t is ${p_x} = 2\cos t,\;{p_y} = 2\sin t$ . Then the angle $heta$ between F and p at a given time t is

${\rm{heta }} = 30^\circ$

${\rm{heta }} = 180^\circ$

${\rm{heta }} = 0^\circ$

${\rm{heta }} = 90^\circ$

Question Tags

🔄Ncert Concepts :Force, Linear Momentum, Differentiation, Dot Product, Angle between vectors

A block of mass 2 kg is placed on a rough horizontal surface with coefficient of static friction 0.5. What is the minimum horizontal force required to just start moving the block?

4.9 N

9.8 N

19.6 N

2.45 N

Question Tags

🎯Difficulty :Easy

🔄Ncert Concepts :static friction, normal force, force analysis

A body of mass 1000 kg is moving horizontally with a velocity $\;50\;{\rm{m}}{{\rm{s}}^{ - 1}}$ . A mass of 250 kg is added. Find the final velocity

$40\;{\rm{m}}{{\rm{s}}^{ - 1}}$

$23\;{\rm{m}}{{\rm{s}}^{ - 1}}$

$12\;{\rm{m}}{{\rm{s}}^{ - 1}}$

$32.5\;{\rm{m}}{{\rm{s}}^{ - 1}}$

Question Tags

🔄Ncert Concepts :Conservation of momentum

A boy of mass 0.25 kg is projected with muzzle velocity $100\;m{s^{ - 1}}$ from a tank of mass 100 kg. What is the recoil velocity of the tank

5 $m{s^{ - 1}}$

25 $m{s^{ - 1}}$

0.5 $m{s^{ - 1}}$

0.25 $m{s^{ - 1}}$

Question Tags

🔄Ncert Concepts :conservation of momentum

A 5 kg stationary bomb is exploded in three parts having mass $1:1:3$ respectively. Parts having same mass move in perpendicular directions with velocity 39 $\;{\rm{m}}{{\rm{s}}^{ - 1}}$ , then the velocity of bigger part will be

$10\sqrt 2 {\rm{\;m}}{{\rm{s}}^{ - 1}}$

$\frac{{10}}{{\sqrt 2 {\rm{\;}}}}{\rm{m}}{{\rm{s}}^{ - 1}}$

$13\sqrt 2 {\rm{\;m}}{{\rm{s}}^{ - 1}}$

$\frac{{15}}{{\sqrt 2 {\rm{\;}}}}{\rm{m}}{{\rm{s}}^{ - 1}}$

Question Tags

🔄Ncert Concepts :Conservation of Momentum, Vector Addition

A body moving with a velocity v, breaks up into two equal parts. One of the part retraces back with velocity v.Then, the velocity of the other part is

v, in forward direction

3 v in forward direction

v, in backward direction

3 v in backward direction

Question Tags

🔄Ncert Concepts :conservation of momentum

Two solid rubber balls A and B having masses 200 and 400 g respectively are moving in opposite directions with velocity of A equal to 0.3 m/s. After collision the two balls come to rest, then the velocity of B is

0.15 m/sec

1.5 m/sec

$- 0.15\;m/sec$

None of the above

Question Tags

🔄Ncert Concepts :Conservation of Momentum, Velocity

A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12kg.The velocity of 18 kg mass is $6\;m{s^{ - 1}}.$ The kinetic energy of the other mass is

256 J

486 J

524 J

324 J

Question Tags

🎯Difficulty :Easy

🔄Ncert Concepts :Conservation of Momentum, Kinetic Energy

10.

A car is moving on a horizontal road with a constant velocity. The coefficient of friction between the tires and the road is $\mu$ . Which type of friction is acting between the tires and the road?

Static Friction

Kinetic Friction

Rolling Friction

Fluid Friction

Question Tags

🎓 Ncert Level:Understanding