Achild jumps on a trampoline. what causes the child to rise in the air?

An airplane flies eastward and always accelerates at a constant rate. at one position along its path it has a velocity of 34.3 m/s, it then flies a further distance of 40100 m and afterwards its velocity is 47.5 m/s. find the airplane\'s acceleration and calculate how much time elapses while the airplane covers those 40100 m.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

You can decrease the resistance of a length of wire by