Home
Class 12
PHYSICS
A body of mass 5 kg statrs from the orig...

A body of mass 5 kg statrs from the origin with an initial velocity `vec(u) = (30 hat(i) + 40 hat(j)) ms^(-1)`. If a constant force `(-6 hat(i) - 5 hat(j))N` acts on the body, the time in which they component of the velocity becomes zero is

A

5s

B

20s

C

40s

D

80s

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A body of mass 5 kg starts from the origin with an initial velocity bar(u)=(30hati+40hatj)ms^(-1) .If a constant force (-6hati-5hatj)N acts on the body, the time in velocity, which the y-component of the velocity becomes zero is.

A particle has initial velocity vec(v)=3hat(i)+4hat(j) and a constant force vec(F)=4hat(i)-3hat(j) acts on the particle. The path of the particle is :

A body of mass 5 kg starts from the origin with an intial with an intial velocity vec (u) = 30hat(i) + 40hat(j). . If the body collides with a wall and after collision its velocity becomes vec(v) = - 30 hat (i) + 40 hat (j) , then what is change in momentum of body ?

A particle of mass 2kg moves with an initial velocity of (4hat(i)+2hat(j))ms^(-1) on the x-y plane. A force vec(F)=(2hat(i)-8hat(j))N acts on the particle. The initial position of the particle is (2m,3m). Then for y=3m ,

A force (3 hat(i)+4 hat(j)) acts on a body and displaces it by (3 hat(i)+4 hat(j))m . The work done by the force is

What is the value of linear velocity, if vec(omega) = 3hat(i)-4 hat(j) + hat(k) and vec(r) = 5hat(i)-6hat(j)+6hat(k)

A particle of mass 2 kg is moving with velocity vec(v)_(0) = (2hat(i)-3hat(j))m//s in free space. Find its velocity 3s after a constant force vec(F)= (3hat(i) + 4hat(j))N starts acting on it.

A body with mass 5 kg is acted upon by a force vec(F) = (- 3 hat (i) + 4 hat (j)) N . If its initial velocity at t =0 is vec(v) = 6 hat(i) - 12 hat (j) ms^(-1) , the time at which it will just have a velocity along the y-axis is :

A motor boat is going in a river with a velocity vec(V) = (4 hat i-2 hat j + hat k) ms^(-1) . If the resisting force due to stream is vec (F)=(5 hat i-10 hat j+6 hat k)N , then the power of the motor boat is

A particl leaves the orgin with an lintial veloity vec u = (3 hat I ) ms &(-1) and a constant acceleration vec a= (-1.0 hat i-0 5 hat j)ms^(-1). Its velocity vec v and positvion vector vec r when it reaches its maximum x-coosrdinate aer .

ALLEN-KINEMATICS-2D-Exercise (O-1)
  1. A particle is projected form a horizontal plane (x-z plane) such that ...

    Text Solution

    |

  2. A body of mass 5 kg statrs from the origin with an initial velocity ve...

    Text Solution

    |

  3. A body throws a ball from shoulder height at an initial velocity of 30...

    Text Solution

    |

  4. A particle is projected from the ground with velocity u at angle theta...

    Text Solution

    |

  5. Suppose a player hits several baseballs. Which baseball will be in the...

    Text Solution

    |

  6. A ball is hit by a batsman at an angle of 37^(@) as shown in figure. T...

    Text Solution

    |

  7. A ball is projected horizontally. After 3s from projection its velocit...

    Text Solution

    |

  8. A particle P is projected from a point on the surface of smooth inclin...

    Text Solution

    |

  9. If time taken by the projectile to reach Q is T, than PQ =

    Text Solution

    |

  10. A particle is projected up the inclined such that its component of vel...

    Text Solution

    |

  11. A particle A is projected with speed v(A) from a point making an angle...

    Text Solution

    |

  12. Consider the motion of three bodies as shown for an observer on B. wha...

    Text Solution

    |

  13. A trolley is moving horizontally with a constant velocty of v m//s w.e...

    Text Solution

    |

  14. An elevator car (lift) is moving upward with uniform acceleration of 2...

    Text Solution

    |

  15. A flag is mounted on a car moving due North with velocity of 20 km//hr...

    Text Solution

    |

  16. Three ships A, B and C are in motion. The motion of A as seen by B is ...

    Text Solution

    |

  17. Wind is blowing in the north direction at speed of 2 m/s which causes ...

    Text Solution

    |

  18. A boat which has a speed of 5 km// hr in steel water crosses a river...

    Text Solution

    |

  19. A man is crossing a river flowing with velocity of 5m//s. He reaches a...

    Text Solution

    |

  20. A motor boat is to reach at a point 30^@ upstream on the outer side of...

    Text Solution

    |