Question
A race track is in the shape of a rectangle with length
of 25 metres and area of 4500 m2. A car takes 10 seconds to make one lap around the perimeter of this track. If the car and a person whose speed is 4 m/s, started moving at the same time along the perimeter of the track but in opposite directions, then find the distance between the car and the person, 3 seconds before they cross each other.Solution
Area of the track = length of track x breadth of track = 25 x breadth of track = 4500 So, breadth of track = 4500 ÷ 25 = 180 So, perimeter of the track = (25 + 180) x 2 = 410 metres So, speed of the car = (410/10) = 41 m/s Relative speed of the car with respect to the person = 41 + 4 = 45 m/s So, distance between the car and the person, 3 seconds before they cross each other = 45 x 3 = 135 metres
Who among the following is known as father of Internet?
What is the shortcut key for ‘Hiding Selected row’ in Excel?
World Wide Web is a collection of all information, resources, pictures, sounds and multimedia on the internet which is accessed through
What is the full form of QSAM?
A set of possible data values is called
Which type of computers are used for solving complex application such as Global Weather Forecasting.
What is the attempt to acquire sensitive information such as usernames, passwords, and credit card details (and sometimes, indirectly, money) by masquer...
What is the mascot of Linux Operating System ?
Which menu option is used to add Header and Footer in a document?
Which output device transfers processed information into a printed page?
Relevant for Exams:
