Change in speed = 14 m/s, time taken = 2 seconds. Calculate the acceleration.

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

70 give a real life example showing how sensory neurons work with the motor neurons