2. Jack uses a pickup truck to drive to work. Because he was in a hurry this morning, he forgot to fill up the tank and ran out of gas. If the truck weighs 1,632 kg and he is able to accelerate the car to
go 0.07 m/s2 by pushing it, how much net force is being exerted on the car?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Am i correct on these two physics questions?