Home
Class 11
PHYSICS
What is the magnitude of the total force...

What is the magnitude of the total force on a driver by the racing car he operates as it accelerates horizontally along a straight line from rest to `60m//s` in `8.0s` (mass of the driver`=80kg`)

A

`0.06KN`

B

`0.78KN`

C

`1.0KN`

D

`1.4KN`

Text Solution

Verified by Experts

The correct Answer is:
C

`a=(v-u)/t,F=sqrt((ma)^(2)+(mg)^(2))`
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    NARAYNA|Exercise LEVEL I(H.W)|43 Videos
  • CALORIMETRY

    NARAYNA|Exercise Level- II (H.W)|11 Videos
  • COLLISION

    NARAYNA|Exercise Level-II (H.W)|54 Videos

Similar Questions

Explore conceptually related problems

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 8.0 m/s when going down a slope for 5.0 s ?

A 5kg. mass is accelerated from rest to 60 m/s in 1 sec. what force acts on it:-

In Fig a car is driven at constant speed over a circular hill and then into a circular valley with the same radius. At the top of the hill, the normal force on the driver from the car seat is 0. The driver's mass is 80.0 kg. what is the magnitude of the normal force on the driver from the seat when the car passes through the bottom of the valley?

A body of mass 1kg is moving along a straight line with a velocity of 1m//s . The external force acting in the body is

A racing car has a uniform acceleration of 4 m//s^(2) . What distance will it cover in 10 s after start ?

A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +11 m/s in a time of 28 s. The combined mass of the boat and trailer is 410 kg. The frictional force acting on the trailer can be ignored. What is the tension in the hitch that connects the trailer to the car ?

The driver of a three wheeler moving with a speed of 36 km//h sees a child standing in the middle of the road and brings his vehicle to rest in 4 s just in time to save the child What is the average retarding force on the vechicle ? The mass of three wheeler is 400 kg and mass of the driver is 65 kg .

A motorboat starting from rest on a lake acceleration line at a constant rate of 3.0 m//s^(2) for 8.0 s . How far does the boat travel during this time ?

A constant force acting on a block of mass 5 kg changes (a) its speed from 6m//s to 10 m//s in travelling a distance 8m in a straight line, (b) its speed from 2m//s to 8m//s in 3s a straight line. Find the magnitude and the direction of the force.

NARAYNA-CIRCULAR MOTION-LEVEL II(H.W)
  1. A rubber ball of mass 50 g falls from a height of 5m and rebounds to a...

    Text Solution

    |

  2. A stream of water flowing horizontally with a speed of 15 ms^(-1) push...

    Text Solution

    |

  3. What is the magnitude of the total force on a driver by the racing car...

    Text Solution

    |

  4. A base ball of mass 150 gm travelling at speed of 20 m//s is caught by...

    Text Solution

    |

  5. A dynamometer D is attached to two blocks of masses 6 kg and 4 kg.Forc...

    Text Solution

    |

  6. A particle of mass m moving with velocity u makes an elastic one-dimen...

    Text Solution

    |

  7. Figure shows the position-time graph of a particle of mass 0.04kg. Sug...

    Text Solution

    |

  8. The elevator shown in fig. is descending with an acceleration of 2ms^(...

    Text Solution

    |

  9. A block of mass m is pulled by a uniform chain of mass m tied to it by...

    Text Solution

    |

  10. Two masses of 8 kg and 4 kg are connected by a string as shown in figu...

    Text Solution

    |

  11. Consider the system as shown in the figure. The pulley and the string ...

    Text Solution

    |

  12. Two masses of 1kg and 5kg are attached to the ends of a massless strin...

    Text Solution

    |

  13. A chain consisting of 5 links each of mass d 0.1 kg is lifted vertical...

    Text Solution

    |

  14. Three blocks of equal masses (each 3kg) are suspended by weightless st...

    Text Solution

    |

  15. Pulleys and strings are massless.The horizontal surface is smooth.What...

    Text Solution

    |

  16. When a train starting from rest is uniformly accelerating, a plumb bob...

    Text Solution

    |

  17. The pulleys and strings shown in the figure are smooth and of negligib...

    Text Solution

    |

  18. Two bodies of mass 4kg and 6kg are attached to the ends of a string pa...

    Text Solution

    |

  19. Accelertion of block m is (theta lt 45^(@))

    Text Solution

    |

  20. A stationary shell breaks into three fragments The momentum of two of ...

    Text Solution

    |