|Average acceleration| = (change in speed) / (time for the change)
Change in speed = (speed at the end) minus (speed at the beginning)
= (40 m/s) - ( 0 )
= 40 m/s .
|Average acceleration| = (40 m/s) / (60 sec) = 2/3 m/s² .
That's the 'electrostatic' force.
Answer:
- we have to protect ozone layer because it is like blanket for earth . It protects the earth form uv rays that are coming from the sun
we have to take some preventive. measures like
- Use ecofriendly things that Doesnot contain (cfc) . It is the major reason for ozone Deplition
Effects of uv rays
- Uv rays are very harmful . If it directly comes in contact with human it cause skin cancer , eyes irritation etc.
Hope it helps.
Answer:
0.281 m
Explanation:
From vᵧ = uᵧ - gt
where vᵧ = final vertical component of the velocity
uᵧ = vertical component of the initial velocity = 2.5 m/s
g = 9.8 m/s²
At maximum height, vᵧ = 0 m/s
So,
Time to reach maximum height, t = uᵧ/g = 2.5/9.8 = 0.255 s
Total time of flight, T = 2 × time to reach maximum height
T = 2 × t = 2 × 0.255 = 0.510 s
Range of the cannon = uₓ T = 0.55 × 0.510 = 0.281 m
Note uₓ = horizontal component of the initial velocity.
