Question

What is the deceleration of the rocket sled if it comes to rest in 1.1 s from a speed of 1000 km/h? (Such deceleration caused one test subject to black out and have temporary blindness.)

The deceleration of the rocket sled is approximately:
a)9.89 , {m/s}²
b)19.6 , {m/s}²
c)29.4 , {m/s}²
d)39.2 , {m/s}²

Answer 1

The deceleration of the rocket sled is approximately 252.53 m/s².

Step-by-step explanation:

To find the deceleration of the rocket sled, we need to convert the speed from km/h to m/s. 1000 km/h is equal to 277.78 m/s. The deceleration can be calculated using the formula: deceleration = (final velocity - initial velocity) / time.

Substituting the values into the formula, we get: deceleration = (0 m/s - 277.78 m/s) / 1.1 s = -252.53 m/s².

Since deceleration is a negative value, we can discard the negative sign and the final answer is approximately 252.53 m/s².