Question

The rocket sled shown in Figure 4.33 decelerates at a rate of $201 \textrm{ m/s}^2$. Its passenger has a mass of 75.0 kg. (a) Calculate the horizontal component of the force the seat exerts against his body. Compare this with his weight by using a ratio. (b) Calculate the direction and magnitude of the total force the seat exerts against his body. In this problem, the forces are exerted by the seat and restraining belts.

Question Image

**Figure 4.33**Rocket sled.

Final Answer

- $15075 \textrm{ N}$. This force is 20.5 times the passenger's weight.
- $1.51 \times 10^{4}\textrm{ N, } 2.80^\circ \textrm{ above the negative x-axis}$

Solution Video