Gravitational potential energy can be calculated using the formula <span>PE = m × g × h, where g is the gravitational acceleration and is constant hence the energy is dependent directly to mass and the height of the object. Hence more PE is registered when the object is heavier and/or at greater initial height. </span>
Solve the following word problems.
1. The ratio of red marbles and blue marbles that Carlo has is 8: 3. When he
exchanged 35 red marbles for 20 blue marbles from his brother, he was left with
equal number of red and blue marbles.
How many red and blue marbles did he have at the beginning
How many red and blue marbles did he have now
Answer:
Displacement will be 5m west
Distance would be 21m No direction
As here it is given that
x = 150 m
a= 2 m/s^2
now initial speed of the plane must be zero as it start from rest
now we will use kinematics
so its final speed is maximum 24.5 m/s
so it will not reach to desired speed at the end of runway
Answer: 100 N
Explanation:
F = ma = 0.5(200) = 100 N
