What is the acceleration of a car at rest that speeds up to 75m/s over 25 seconds? A. -3.0m/s/s
B. 75 m/s/s
C. 3.0 m/s/s
D. 25 m/s/s
E. Not enough data is given

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.