In a track competition, two athletes, Sipho and Thabo, are running at constant speed of 8 ms-1. Thabo is in front and 120 m from the finishing line, whilst Sipho is 10 m behind Thabo. What is the minimum acceleration that Sipho needs in order to win? Express your answer in m/s2

the device is called “ rocket engine”

the amount of current in the coil

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.