Final answer:
The 94.0 kg astronaut exerts a force of approximately 921.2 newtons (N) on his chair while sitting at rest on the launch pad, calculated using the weight formula W = m × g with g being the acceleration due to gravity.
Step-by-step explanation:
The force a 94.0 kg astronaut exerts on his chair while sitting at rest on the launch pad can be found using the equation for weight, which is the force due to gravity. The weight (W) is calculated by multiplying the mass (m) of the astronaut by the acceleration due to gravity (g), where g is approximately 9.80 m/s² on Earth's surface. Therefore, W = m × g.
W = 94.0 kg × 9.80 m/s² = 921.2 N
Thus, the astronaut exerts a force of approximately 921.2 newtons (N) on his chair when sitting at rest on the launch pad.