Andre walked his dog a distance of 75 meters to the east. The walk took 30 seconds. What was their velocity?
A. 2.5 m/s east
B. 0.4 m/s east
C. 0.4 m/s
D. 2.5 m/s

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?