A dynamics question in need of checking?
A toy rocket of mass 0.2kg is projected vertically upwards from rest by means of force which decreases uniformly in 2 seconds from 2kg wt to zero and thereafter ceases. Find the maximum height reached.
If it helps, a = (9-5t)g from 0<t<2 and a = -g from t>0 (t = seconds).
The answer is 130g/3 metres but I can't get this answer.
Any help is appreciated. THanks.
- Anonymous1 decade agoFavorite Answer
Yes, the 130g/3 m is correct. You have to work from first principles.
Got the method from the link below: