Bob is pushing a box across the floor at a constant speed of 1.5 m/s, applying a horizontal force whose magnitude is 60 n. alice is pushing an identical box across the floor at a constant speed of 3 m/s, applying a horizontal force. (a) what is the magnitude of the force that alice is applying to the box?

120n

since the speed is doubled, her force is doubled

f=ma newton

f=100x2.5=250n

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.