Question

the second hand of a clock is 8cm long. Sandy said the tip of the hand will move 50.3 in one minute (rounded to 1 decimal place) is Sandy correct? give reason for your answer please give answer​

Answer 1

Answer:0.00837758m/s

Step-by-step explanation:

The hand of a clock turns around, so in circles

The length of a circle = 2*pi*r (r is half the diameter of a circle(in this case 8)

2*pi*8 = 16pi = 50.26548246cm = 0.5026548246m(meter)

one minute is 60 seconds, so 0.5026548246/60 =0.00837758m/s (around 0.008m/s)(this is the second plate)

to get the hour plate you’ll have to subvide the previous answer by 60 = 0.000139626m/s(around 0.0001m/s)

The speed of the second hand (the one which shows seconds) is 0.008m/s.

or 0.00837758m/s