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

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-2)|47 Videos
  • KINEMATICS-2D

    ALLEN |Exercise Exercise (S-2)|14 Videos
  • GRAVITATION

    ALLEN |Exercise EXERCISE 4|9 Videos
  • MOTION IN A PALNE

    ALLEN |Exercise SOLVED EXAMPLE|28 Videos

Similar Questions

Explore conceptually related problems

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 particle leaves the origin with initial velocity vec(v)_(0)=11hat(i)+14 hat(j) m//s . It undergoes a constant acceleration given by vec(a)=-22/5 hat(i)+2/15 hat(j) m//s^(2) . When does the particle cross the y-axis ?

A particle is moving with velocity vecv = k( y hat(i) + x hat(j)) , where k is a constant . The genergal equation for its path is

A particle leaves the origin with an lintial veloity vec u = (3 hat i) and a constant acceleration vec a= (-1.0 hat i-0 5 hat j)ms^(-1) . Its velocity vec v and position vector vec r when it reaches its maximum x-coordinate what are a. its velosity b. its position vector

A particle has initial velocity of (3hat(i)+4hat(j)) m//s and a acceleration of (4hat(i)-3hat(j)) m//s^(2) . Its speed after one second will be equal to :-

Find the components of vector vec(a)=3hat(i)+4hat(j) along the direction of vectors hat(i)+hat(j) & hat(i)-hat(j)

A projectile is given an initial velocity of ( hat(i) + 2 hat (j) ) m//s , where hat(i) is along the ground and hat (j) is along the vertical . If g = 10 m//s^(2) , the equation of its trajectory is :

A cricket ball of mass 150 g has an initial velocity mu=(3hati+4hatj) ms^(-1) and a final velocity v = - (3hat(i) + 4hat(j)) ms^(-1) , after being hit. The change in momentum (final momentum­initial momentum) is (in kgms^(-1) )

A body of mass 1 kg begins to move under the action of a time dependent force vec(F) =(2t hat(i)+3t^(2)hat(j)) N . Where hat(i) and hat(j) are unit vectors along X and Y axis . What power will be developed by the force at the time t .

A small sphere of mass 1 kg is moving with a velocity (6hat(i)+hat(j))ms^(-1) . It hits a fixed smooth wall and rebound with velocity (4hat(i)+hat(j))ms^(-1) . The coefficient of restitution between the sphere and the wall is

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 5km per hour in still water crosses a rive...

    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

    |