Answer:
The correct answer is A.
Objects in free fall accelerate due to <u>gravity</u>.
Explanation:
Momentum can help an object to keep its state of motion at a constant velocity when no external force is applied. It can never accelerate the object.
According to the laws of motion, we know that acceleration is produced in a body only when a Force is applied in the direction of motion of body.
During a free fall, only the force of gravity is acting on an object and that too in the direction of its motion. Hence, the acceleration produced in a free falling object is due to gravity.
When a pendulum is not in the center of gravity in equailrbliaum there is mechanical energy, potential energy is if a rock is cut from the string it will fall
5.6•10^5 so it’s to the power of positive 5
You have a speed and a direction.
That gives you the wind's 'velocity'.
Answer:
θ = 53.13° above horizontal
Explanation:
Ignore air resistance.
The time the ball takes to reach its max height will equal the time to travel half the max range R.
√(2h/g) = (R/2)/vcosθ
vsinθ/g = R/2vcosθ
2v²sinθcosθ = Rg
2v²sinθcosθ = 3hg
v² = u² + 2gh
0² = v²sin²θ + 2gh
v²sin²θ = 2gh
v² = 2gh/sin²θ
2v²sinθcosθ = 3hg
(2gh/sin²θ)2sinθcosθ = 3hg
(2/sinθ)2cosθ = 3
cotθ = 3/4
θ = 53.130
