. A trebuchet launches a 6 kg watermelon at an angle of 29o above the horizontal at the top of the cliffs of Dover, 110 m above sea level, towards into the English channel, at 52 m/s. a) Neglecting air drag, what is the watermelon’s impact speed into the channel? Solve using energy methods. b) What is the watermelon’s change in potential energy from launch to impact? c) What is the amount of drag on the watermelon just as its launched if you can model the watermelon as spherical, radius 12 cm, drag coefficient 0.4, and density of air is 1.2 kg/m^3. d) What is the acceleration on the watermelon, just after it’s launched in unit vector notation? Make sure you define your axes using an illustration.
. A trebuchet launches a 6 kg watermelon at an angle of 29o above the horizontal...
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height, H of 31.0 m above sea level, directed at an angle θ above the horizontal with an unknown speed v0 A V The projectile remains in flight for 6.00 seconds and travels a horizontal distance D of 153.0 m. Assuming that air friction can be neglected, calculate the value of the angle θ Submit Answer...
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height, H of 31.0 m above sea level, directed at an angle θ above the horizontal with an unknown speed v0 A V The projectile remains in flight for 6.00 seconds and travels a horizontal distance D of 153.0 m. Assuming that air friction can be neglected, calculate the value of the angle θ Submit Answer...
A 5.00-kg watermelon is dropped from rest from the roof of a 20.0-m -tall building and feels no appreciable air resistance. Part A) Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. Part B) Just before it strikes the ground, what is the watermelon's kinetic energy? Part C) Just before it strikes the ground, what is the watermelon's speed? Part D) Would the answer in part A be different if there...
A catapult on a cliff launches a large round rock towards a ship on the ocean below. The rock leaves the catapult from a height H of 34.0 m above sea level, directed at an angle θ above the horizontal with an unknown speed v0. The projectile remains in flight for 6.00 seconds and travels a horizontal distance D of 152.0 m. 1) Assuming that air friction can be neglected, calculate the value of the angle θ. You know how...
Could you please please solve both questions, thank you. 1. A 6.30 kg watermelon is dropped from rest from the roof of an 18.0 m-tall building and feels no appreciable air resistance. a. Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. b. Just before it strikes the ground, what is the watermelon's kinetic energy? c. Just before it strikes the ground, what is the watermelon's speed? 2. A sled with...
Part A A 4.31-kg watermelon is dropped from rest from the roof of a 17.5-m-tall building and feels no appreciable air resistance. Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. Express your answer with the appropriate units. НА ? W = Value Units Submit Request Answer Part B Just before it strikes the ground, what is the watermelon's kinetic energy? Express your answer with the appropriate units. μΑ ? Value...
A 2 kg rock is fired at an angle of 60 degree above the horizontal with an initial speed 20 m/s by someone standing on the edge of a cliff 40 m above level ground. The initial position of the rock is taken to be y = 0. Air resistance is not neglected in this situation! (a) The initial mechanical energy of the rock is? (b) The work being done on the rock by the force of gravity after being...
A 0.650 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1425 J and at its highest point is 177.6 m above the launch point. What is the horizontal component of its velocity? What was the vertical component of its velocity just after launch? At one instant during its flight the vertical component of its velocity is 35.40 m/s. At that time, how far is it above or below the launch point?
A 3.2 kg sloth hangs 3.2 m above the ground. (a) What is the gravitational potential energy of the sloth-Earth system if we take the reference point y = 0 to be at the ground? J (b) Assume the sloth drops to the ground and air drag on it is negligible. What is the kinetic energy of the sloth just before it reaches the ground? J (c) What is the speed of the sloth at this time?
A 60.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 124 m/s from the top of a cliff 144 m above level ground, where the ground is taken to be y = 0. (a) What is the initial total mechanical energy of the projectile? (Give your answer to at least three significant figures.) (b) Suppose the projectile is traveling 87.9 m/s at its maximum height of y = 304 m. How much...