Answer:
answer is 61.8 m/s; 32.9
l am not sure
Acceleration = 9 × 10^5 m/s^2 ( deceleration )
Explanation:
From the first equation of motion:
V = u + at
15000 = 30000 + 60a
a = ( 15000-30000)/60
a = 9 × 10^5 m/s^2
density=mass/volume
mass=67.5
volume=15cm cube
so
67.5/15
4.5g/cm cube
