Acar accelerates at 1.25 m/s^2 for 20seconds. whats its change in velocity

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.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Where do magnetic lines of force enter earth?