The speed of sound in air is approximately 331.4 m/s 0.6 T. T is the temperature measured in degrees Celsius. The speed of light is 300,000 km/sec, which means it travels from one place to another on Earth more or less instantaneously. On a cool night when the temperature is 10 degrees C, you can see lightning flash and then hear the thunder rumble five seconds later. How far away (in km) did the lightning strike

Answerboth technicians (a) and (b);

Distance covered, s = 8ft - 4ft = 4 ftinitial velocity, u = 34 ft/sthe acrobat is moving upwards and therefore, a = -g = -9.81 m/s^2 = 32.19 ft/s^2applying equation of motion; s = ut -1/2gt^2then,4 = 34t -1/2*32.19t^24 = 34t - 16.095t^2rearranging; -16.095t^2 + 34t - 4 = 0solving the quadratic equation; t = {-34 +/- sqrt [34^2 - 4(-16.)]}/2(-16.095) = 1.06 +/- 0.93 = 0.13 or 1.99the acrobat will take 0.13 seconds to be at 8 ft above the ground. additionally, once at the maximum height, the acrobat will move down and be at the same spot (that is height) after 1.99 seconds moving down.

Tenses up which can create a sharp pain