Question

A rocket powered sled is accelerating along a straight, level track with a constant acceleration of magnitude 20 m/s2. By how much will the speed of the sled change in 3.00 seconds

Answer 1

Answer:

the change in speed of the sled after 3.0 s is 60 m/s.

Explanation:

Given;

constant acceleration of the sled, a = 20 m/s²

change in time of motion, dt = 3.0 s

The change in speed of the sled after 3.0 s is calculated as;

$a = \frac{dv}{dt} \\\\dv = a \times dt\\\\dv = 20 \ \times \ 3\\\\dv = 60 \ m/s$

Therefore, the change in speed of the sled after 3.0 s is 60 m/s.