Q:

A) 9 | B) 9.6 |

C) 10 | D) 10.8 |

Answer: D) 10.8

Explanation:

Explanation:

Relative speed = (60 + 40) km/hr =[ 100 x ( 5 / 18 ) ]m/sec = ( 250 /9 ) m/sec.

Distance covered in crossing each other = (140 + 160) m = 300 m.

Required time = [ 300 x ( 9/250 ) ] sec = ( 54/ 5 )sec = 10.8 sec.

1
471

2
471

Q:

A) 2 hours | B) 6 hours |

C) 3 hours | D) 4 hours |

1
403

0
421

Q:

A) 245 and 54 | B) 255 and 40 |

C) 255 and 36 | D) 245 and 45 |

0
412

Q:

A) 5.76 m/s | B) 7.76 m/s |

C) 6.76 m/s | D) 4.76 m/s |

0
391

1
375

Q:

A) 140 km/h | B) 105 km/h |

C) 70 km/h | D) 280 km/h |

0
411