Answer:
44mph
Step-by-step explanation:
When it hits a wooden target, the ball exerts a force on the fibers in the wood, ... It turns out that an object's kinetic energy increases as the square of its speed. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, ... In equation form: kinetic energy (joules) = 1/2 x mass (kg) x velocity2 (m/s)