When a brick is dropped from the roof of a house, it lands on the ground with a speed v. what will the speed at ground level be for an identical brick dropped from a roof twice as high as the first one?

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.