Starting from rest, a 0.0495 kg0.0495 kg steel ball sinks into a vat of corn syrup. the thick syrup exerts a viscous drag force that is proportional to the ball's velocity. ⃗ drag=−⃗ f→drag=−cv→ where =0.298 n⋅s/mc=0.298 n⋅s/m is a constant related to the size and composition of the ball as well as the viscosity of the syrup. find the rate at which gravitational energy is converted to thermal energy once the ball reaches terminal velocity.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?