Mary walks a certain distance up a road that climbs a hill. the vertical component of her displacement is 17.63 meters, and the
horizontal component of her displacement is 100 meters. what is the road's approximate angle of inclination?
a. 10 degrees
b. 13 degrees
c. 17 degrees
d. 20 degrees

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit