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- You build a potato cannon. It has a barrel 1.5 meters long, and want to find out some interesting information about it. With a test fire, you set the cannon to 35 degrees from the ground and fire! The .2 kg potato launches out of the barrel at 30 m/s! How far away do we have to walk to collect our newly formed hash browns?arrow_forwardThe rocket in a rocket-powered airplane generates a steady force of 10,000 N in the forward direction and the plane moves horizontally at a constant velocity of 300 m/s through the air. The rocket engine is upgraded so that it now provides a forward force of 90,000 N. What is the new constant velocity of the plane? You cannot neglect air resistance in this question. 200 m/s 300 m/s 400 m/s 600 m/s 900 m/sarrow_forwardSomone is standing on a piece of cardboard holding a wire that is attached to a vehicle. The friction between the cardboard and road is 67N. The wire makes a 24° angle with the road. The tension on the wire is 134N. If they start from rest how long does it take them to reach a speed of 14m/s and how far have they traveled? The mass of the person and the cardboard is 80kgarrow_forward
- scientists are experimenting with a king of gun that may eventually be used to fire payloads directly into orbit. in one test, this gun accelerates a 3.8 kg projectile from rest to a speed of 5.2 * 10^3 m/s. the net force accelarating the projectile is 2.5 * 10^5 N. how much time is required for the projectile to come up to speed?arrow_forwardDavid throws a 50 kg cart down a ramp with an initial speed of vi = 6 m/s. The ramp is at an angle of 20◦, and the coefficient of kinetic friction between the cart and the ramp is µk = 0.25. Additionally, the coefficient of static friction is µs = 0.55. How much time does it take to reach Ryan who is 10 m away? Assume that the cart slides and doesn’t roll.arrow_forwardA woman in a lift is trying to weigh a parcel with a spring scale. The lift accelerates downwards at 1.7 m/s, then travels at a constant speed of 3 m/s, and finally decelerates at 1.1 m/s. During the first stage of the motion, the scale reads 6.6 kg. Note: a spring scale is a device for measuring weight, where the parcel is suspended below a spring that is attached to a dial. The extension of the spring is proportional to the weight of the parcel, but the dial is calibrated to give the mass of the parcel in kilograms. The dial will only give the correct mass if the parcel is subjected to the Earth's normal gravity. What does the scale read during the other stages of the motion? Second Stage kg. Third Stage kg. Give your answers correct to 1 decimal place.arrow_forward
- A boat and its passengers have a combined mass of 5.10x10^2 kg. The boat is coasting into a pier at a speed of 1.00 m/s. How great a force is required to bring the boat to rest in 1.00x10^2 s?arrow_forwardTwo constant forces act on an object of mass m = 4.30 kg object moving in the xy plane as shown in the figure below. Force F, is 26.5 N at 35.0°, and force F, is 48.0 N at 150°. At time t = 0, the object is at the origin and has velocity (3.50î + 2.15j) m/s. 150° 35.0° (a) Express the two forces in unit-vector notation. F, - N (b) Find the total force exerted on the object. N (c) Find the object's acceleration. m/s2 Now, consider the instant t = 3.00 s. (d) Find the object's velocity. m/s (e) Find its position. (f) Find its kinetic energy from V½mv2. kJ (g) Find its kinetic energy from 2mv,2 + EF · AF. kJarrow_forwardAt launch a rocket has a mass of 3.66×104 kg, and the thrust of the engines is 5.34×105 N. If the rocket is launched straight upwards from the surface of Earth, what is the initial acceleration of the rocket? Take upwards to be the positive direction. Express your answer in m/s2 to 3 significant figures. Use g=9.81 m/s2.arrow_forward
- Let's say an astronaut is walking on the moon and wants to test out some basic kinematics. Because there's no atmosphere, there's no air resistance, so the only thing that can cause an object to move faster on the moon is the moon's gravity. Let's say you have a hammer and a feather, each weighing 10.0 kg and 1.00 kg respectively. When you drop them from a height of 1.65 meters, they should both hit the ground at the same time. The gravity on the moon is around 1/6 of what it is on Earth, so you need to figure out how long it'll take for the hammer to reach the ground.arrow_forwardA robot with fancy wheels is trained to move in two directions simultaneously. The force in the forward direction is 10 N and the force in the horizontal direction is 8 N. If the robot starts from rest, has a mass of 75 kg and travels for 100 seconds, what is the magnitude of the robot's final displacement?arrow_forwardConsider a 33 kg probe in outer space. The probe begins at rest, then experiences a net force of size 599 N for 8 s, then the net force becomes zero and the probe continues to travel for another 8 s. How far does the probe travel in total, in m? (Please answer to the fourth decimal place - i.e 10.4665)arrow_forward
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill