Ashopping cart is pushed with 35 n of force to the right. it moved to the right 4m. what was the work done to the grocery cart.

140 N-m

Explanation:

Work done is equal to the product of force and displacement  

Here in this case,  

Force = weight of the cart

Displacement = distance moved by the cart

Work done = Force x displacement

= 35 N x 4 m

= 140 N-m

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm