The Lockheed SR-71 Blackbird is a high-altitude spy plane and the current official record speed holder. Fully loaded, the Blackbird has a mass of 7.7 x 10 4 kg, and at
top speed it has a kinetic energy of 3.7 x 10 10 J. What is the top speed of the SR-71?

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

What are the north and south poles of a solenoid change with?

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.