Rate of change of momentum = impact force
(m*v-m*u)/t = F
4000*20/t = 80000 (note: v is zero as it stopped)
<span>soo, t = 1 sec</span>
Answer:
The image distance is 20.0 cm.
Explanation:
Given that,
Power = 1.55 dp
Distance between book to eye = 26.0+3.00=29.0 cm
We need to calculate the focal length
Using formula of focal length

Put the value into the formula



We need to calculate the image distance
Using lens formula


Put the value into the formula



Hence, The image distance is 20.0 cm.
Answer:
D.-4.798m/s
Explanation:
Greetings !
Given values

Solve for V of the given expression
Firstly, recall the velocity-time equation

plug in known values to the equation

solve for final velocity

Hope it helps!
The cliff is 319. kilograms above the water