Question

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 915 N and the drag force has a magnitude of 1061 N. The mass of the sky diver is 93.4 kg. Take upward to be the positive direction. What is his acceleration, including sign

Answer 1

Step-by-step explanation:

According to newton's second law of motion.

`\sum Fx = ma\\\\\sum Fx = 1061 - 915\\\\\sum Fx = 146N`

m is the mas of the sky diver = 93.4kg

a is the acceleration of the skydiver

From the formula above;

`a = (\sum Fx)/(m)\\ \\a = (146)/(93.4)\\\\a = 1.563m/s^2`

Hence the acceleration of the sky diver is 1.563m/s²