Answer:
plz brainliest
Explanation:
position A : is all potential
position B : is losing potential and gaining kinetic energy
position c : is all kinetic
position D : is losing kinetic and gaining potential
position E : is all potential
thx have a great day
The strength of the gravitational force between two objects depend on two factors, mass and distance.
Answer:
Speed, v = 5 m/s
Explanation:
We have,
The length of the football field, l = 100 m
A person takes 20 seconds to run its length.
It is required to find the speed of the person with which he should run. The distance covered divided by time taken is called its velocity.
So, the speed of the person is 5 m/s.
Answer:
The position and velocity of the spring is −2.12 inches and -6.66 ft/s.
Explanation:
Given that,
The position function,
We need to calculate the position of the spring at t = 1.5 s
Using position function
Put the value of t in the function
We need to calculate the velocity of the spring
Using position function
On differentiating
Put the value into the formula
Hence, The position and velocity of the spring is −2.12 inches and -6.66 ft/s.
Work is force x displacement
So force is 48 and displacement is 5.2 as given
Therefore 48 x 5.2
Which is 249.6
Approximately 250 J (joules)