look at the two forces acting on the truck. the force of friction and the force of the truck moving. each force is going an opposite way so depending on which force is greater, the truck will move in that direction. it doesn't give mass so i don't think mass will matter because F=ma and Force...
Homework Statement
We are given an amount perfume, that has an energy level amounting to 1200 joules. Using this as the fuel, i need to build a potato cannon. How can i build the cannon to maximize the distance the potato travels when shot with this amount of fuel?
Homework Equations...
Homework Statement
a handheld gaming device has 120 pixels per inch on its 2X3 in screen and uses a 5V, 7 watt*hour battery to power it. if each pixel is lit by a photon that is emitted from one electron flowing across the diode, will it last the whole week if you play it just in physics...