# Kinematics-Average Speed and Instantaneous Velocity (NEET Physics): Questions 18 - 21 of 108

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## Question number: 18

» Kinematics » Average Speed and Instantaneous Velocity

### Question

A ball is projeced from O with an initial velocity 700 cm/s in a direction 37° above the horizontal. A ball B, 500 cml away from O on the line of the initial velocity of A, isl released from rest at the instant A is projected. The height! through which B falls, before it is hit by A and the directionl of the velocity A at the time of impact will respectively bel [given g = 10 m/s2, sin 37° = 0.6 and cos 37° = 8.0]

### Choices

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

a. | 245 cm, 20° 44 | |

b. | 300 cm, 27° 43 | |

c. | 255 cm, 27° 43 | |

d. | 250 cm, 28° 42 |

## Question number: 19

» Kinematics » Average Speed and Instantaneous Velocity

### Question

A projectile thrown from a height of 10 m with velocity of √2 m/s, the projectile will fall, from the foot of projection, at distance- (g = 10 m/s ^{2})

### Choices

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

a. | 1 m | |

b. | 3 m | |

c. | √2 m | |

d. | 2 m |

## Question number: 20

» Kinematics » Average Speed and Instantaneous Velocity

### Question

A ball is thrown from ground level so as to just clear a wall 4 metres high at a distance of 4 metres and falls at a distance of 14 metres from the wall. The magnitude of velocity on the ball will be

### Choices

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

a. | √l82 m/s | |

b. | √181 m/s | |

c. | √186 m/s | |

d. | √185 m/s |

## Question number: 21

» Kinematics » Average Speed and Instantaneous Velocity

### Question

A body of mass 4 kg lying on a smooth surface is attached to a string 6 m long and then whirled round in a horizontal circle making 60 revolution per minute. The centripetal acceleration will be

### Choices

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

a. | 23.68 m/s | |

b. | 236.6 m/s | |

c. | 1.18 m/s | |

d. | 2.368 m/s |