Question

A 1,000 kg rocket is launched vertically from rest on the ground with an acceleration of 50 m/s^2. What is the velocity of the rocket after 30 seconds? Ignore friction and air resistance.

a) 1,500 m/s
b) 3,500 m/s
c) 1,500 m/s^2
d) 3,000 m/s

Answer 1

The velocity of the rocket after 30 seconds is 1500 m/s.

Step-by-step explanation:

To find the velocity of the rocket after 30 seconds, we can use the equation v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. In this case, the rocket starts from rest, so the initial velocity is 0 m/s. The acceleration is given as 50 m/s^2. Plugging these values into the equation, we have v = 0 + 50 * 30 = 1500 m/s. Therefore, the velocity of the rocket after 30 seconds is 1500 m/s.