At=v-u, where u=0
t= v/a=42/6 = 7
Answer: 7 seconds
U = 1/2 * k * x²
U = 0.003J
x = 0.0055m
k spring constant
Biodiversity is the variety of life in the world or in a particular habitat or ecosystem. destruction, degradation and fragmentation of habitats. reduction of individual survival and reproductive rates through exploitation, pollution and introduction of alien species. Those are the negative impacts