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Given :
Height from which ball is dropped , h = 40 m .
Acceleration due to gravity , g= 10 m/s² .
Initial velocity , u = 0 m/s .
To Find :
Velocity when ball covered 20 m and velocity when it hit the ground .
Solution :
Now , height when ball covered 20 m distance is , 40 - 20 = 20 m .
By equation of motion :
Now , distance covered when body reaches ground is , 40 m .
Putting value h = 40 m in above equation , we get :
Hence , this is the required solution .
Answer:
Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?
Explanation:
Answer:
Explanation:
(a)
Applying the conservation of energy for cube,
i.e the initial kinetic energy of the body = its final potential energy
1/2mv² = mgh
h1 = v²/2g -------------------- (1)
and For cylinder,
the initial kinetic and rotational energy equals the final potential energy
1/2 mv² + 1/2 Iω² = mgh
here I = momentum of inertia of the cylinder
I = 1/2 m R²
∴ 1/2 mv² + 1/2 (1/2mR²)v²/R² = mgh
1/2 mv² + 1/4mv² = mgh
h2 = 3v²/4g -------------- (2)
From equations (1)&(2);
therefore the cylinder will go the greater distance up the incline.
(b)
h1-h2 = v²/2g - 3v²/4g
= 0.25 v²/g
the difference between the maximum distances the objects travel up the incline is 0.25*v²/g.
(c)
here we are taking into account of rotational energy.
Answer:
The final position is -69.8 m
Explanation:
Recall that displacement is defined as:
where represents the final position, and the initial position of the object (in our case 83.2 m). Since we also know the displacement (-153 m), we can solve the equation for the final position: