Barbed wire entanglements are designed to slow the movement of (a) what type of troops with (b) what type of obstacle

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge