A rocket-driven sled running on a straight,
level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of
440 m/s in 1.9 s starting from rest.
What is the acceleration of the sled, assuming it is constant
243
To find the acceleration of the sled, we can use the equation for acceleration:
acceleration = change in velocity / change in time
In this case, the sled starts from rest, so its initial velocity (u) is 0 m/s. The final velocity (v) of the sled is given as 440 m/s, and the time taken (t) is 1.9 seconds.
Substituting these values into the formula:
acceleration = (440 m/s - 0 m/s) / (1.9 s)
Simplifying the equation:
acceleration = 440 m/s / 1.9 s
Now, we can calculate the acceleration:
acceleration ≈ 231.58 m/s²
Therefore, the acceleration of the sled is approximately 231.58 m/s².