# NEET Physics: Questions 883 - 886 of 2099

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## Question number: 883

» Kinematics » Average Speed and Instantaneous Velocity

### Question

A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface fires 10 shots horizontally. Each bullet has a mass 10 gm and a muzzle velocity of 800 m/s. What velocity does rifle man acquire at the end of 10 shots?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 0.3 m/s | |

b. | 1.2 m/s | |

c. | 0.5 m/s | |

d. | 0.8 m/s |

## Question number: 884

» Laws of Motion » Force and Inertia

### Question

Choose the correct statements -

(1) For equilibrium of a body under the action of concurrent forces

(2) If the downward acceleration of the lift is a = g, then the body will experience weightlessness.

(3) If the downward acceleration of the body is a > g, then the body will rise up to the ceiling of lift

(4) If the downward acceleration of the lift is a > g, then the body will experience weightlessness.

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) | Response | |
---|---|---|

a. | 1 and 2 are correct | |

b. | 1, 2 and 3 are correct | |

c. | 2 and 4 are correct | |

d. | 1 and 3 are correct |

## Question number: 885

» Work, Energy and Power » Work Done

### Question

A force F = (7 - 2x + 3x ^{2}) N is applied on a 2 kg mass which displaces it from x = 0 to x = 5 m. Work done in joule is -

### Choices

Choice (4) | Response | |
---|---|---|

a. | 35 | |

b. | 135
| |

c. | 270 | |

d. | 70 |

## Question number: 886

» Laws of Motion » Newton's Law » Newton's Second Law of Motion

### Question

Conservation of linear momentum is equivalent to-

### Choices

Choice (4) | Response | |
---|---|---|

a. | Newton ‘s first law of motion | |

b. | Newton’s second law of motion | |

c. | Newton ‘s third law of motion | |

d. | Conservation of angular momentum. |