Multipliy by 15 in 2 second

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

A car is running at speed of 108 kmph. What distance will it cover in 15 seconds ?

A source produces 15 crests and 15 throughs in 3 seconds. When the second crest in produced, the first is 2 cm away from the source. Calculate (a) frequency (b) wavelength ( c) speed of the wave.

A clock has its second hand 2.0 cm long. Find the average speed and modulus of average velocity of the tip of the second hand in 15 s .

A train crossed a 140 m long platform in 15 seconds and a 180 m long platform in 17 seconds. The speed of the train was: