2 metre is the length of path travelled by light in vacuum during a time interval of (1) 1/299,972,458 of a second (2) 1/149,896,229 of a second (3) 1/299,792,854 of a second (4) 1/149,896,427 of a second

If S=2t^(3)-4t^(2)+12t , then distance travelled during the time -interval [0,1] is

A spaceship travels at 1,260 km/h. How many metres does it travel in 1/(10) th of a second?

The metre is defined as the distance travelled by ligh in (1)/(299,792,458) second. Why didn't people choose some easier number such as (1)/(300.000.000) second?

The element of second row and third column in the inverse of [[1, 2, -3], [0, 1, 2], [0, 0, 1]] is

The element of second row and third column in the inverse of [[1, 2, 1], [2, 1, 0], [-1, 0, 1]] is

The position of an object moving on a straight line is defined by the relation x=t^(3)-2t^(2)-4t , where x is expressed in meter and t in second. Determine (a) the average velocity during the interval of 1 second to 4 second. (b) the velocity at t = 1 s and t = 4 s, (c) the average acceleration during the interval of 1 second to 4 second. (d) the acceleration at t = 4 s and

The circumferences of the front and rear wheels of a bicycle are 3.5m and 3m respectively.If the vehicle is moving at a speed of 15m/sec ,the shortest time in which both the wheels will make a whole number of turns is (a) 1.4 seconds (b) 2.1 seconds (c) 4 seconds (d) 6.4seconds

If the length of a second's pendulum is increased by 1% , how many seconds will it loss or gain in a day ?

The length of second's hand in watch is 1 cm . The change in Velocity of its tip in 15 seconds is