10. A cat walking at 0.25 m/s sees a mouse and accelerates uniformly at 0.40 m/s for 3.0 s. What is the cat's displacement during this time?

The displcament is 2.55m

Explanation:

step one:

Given that the intial speed is

u= 0.25 m/s

and acceleration is

a= 0.40 m/s^2

and time t= 3seconds

step two:

Applying the formula

s=ut+1/2at^2

s= 0.25*3+ 1/2*0.4*3^3

s= 0.75+3.6/2

s= 0.75+1.8

s=2.55 m

The displacement is 2.55m

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.