Question

A model rocket is constructed with a motor that can provide a total impulse of 35.0 N·s. The mass of the rocket is 0.192 kg. What is the speed that this rocket achieves when it is launched from rest? Neglect the effects of gravity and air resistance.

Answer 1

`v_f = 182.3 m/s`

Step-by-step explanation:

As we know that total impulse is given as the product of mass and change in velocity

so here we will have

`I = m(\Delta v)`

here we will have

`I = 35.0 N s`

also we know that mass of the rocket is

m = 0.192 kg

now we will have

`35 = 0.192(v_f - 0)`

`v_f = 182.3 m/s`