The mass of a ball is 20g and its height is 8m, calculate (a) the potential energy of the ball at F
The potential energy (PE) of an object is given by the formula:
PE = mgh
Where:
m = mass of the ball = 20g = 0.02 kg
g = acceleration due to gravity = 9.8 m/s^2 (approximate value)
h = height of the ball = 8 m
So, the potential energy of the ball is:
PE = 0.02 kg x 9.8 m/s^2 x 8 m
= 1.568 J (joules)
Therefore, the potential energy of the ball at height F is 1.568 J.
The mass of a ball is 20g and its height is 8m,the kinetic energy when it has a velocity of 2m/s.
The mass of a ball is 20g and its height is 8m, calculate (a) the potential energy of the ball at F (b) the kinetic energy when it has a velocity of 2m/s. (c) the velocity just before it touches the ground ( take s = 10m/s2)
The mass of a ball is 20g and its height is 8cm the velocity just before it touches the ground ( take s = 10m/s2)
To calculate the potential energy of the ball at height "h," you can use the formula:
Potential Energy (PE) = mass (m) × acceleration due to gravity (g) × height (h)
In this case, the mass of the ball is given as 20g, but it would be better to convert it to kilograms (kg) for consistent units. Since 1 kilogram is equal to 1000 grams, the mass of the ball in kilograms is 20g ÷ 1000 = 0.02kg.
Next, we need the acceleration due to gravity, which is approximately 9.8 m/s² on Earth.
Now we have all the values needed to calculate the potential energy of the ball at height "h = 8m":
PE = 0.02kg × 9.8 m/s² × 8m
PE = 1.568 Joules
Therefore, the potential energy of the ball at height 8m is 1.568 Joules.