An object is released at the top of a ramp and slides down it. If the ramp is frictionless does the speed of the object at the bottom depend in any way on the shape of the ramp? Explain. What if there is friction present? Will the ramp’s shape affect its final speed? Explain.
Q: Q2. An 80 kg dog is lying on the floor at rest. The coefficient of kinetic friction between the dog…
A: We are given force by person. We first find the work done by the person. This is done by finding net…
Q: 71. Block 2 shown below slides along a frictionless table as block 1 falls. Both blocks are attached…
A: Given : mass of 1st block, m1 = 2.0 kg mass of 2nd block, m2 = 4.0 kg distance moved, s = 2.0 m To…
Q: A 70.0 kg sled is pulled from rest by a snowmobile and accelerates at 2.2 m/s² [forward] for 7.5 s.…
A:
Q: A 1000 kg automobile is moving at 30 m/s at a height of 5.0 m above the bottom of a hill when it…
A: Mass ( m ) = 1000 kg Height ( hi ) = 5 meter Velocity ( uf ) = 30 m/s
Q: A bicycle racer, with a mass of 84 kg, is has the same amount of kinetic energy as a car traveling…
A:
Q: A freight car in a park moves along a frictionless level railroad track at constant speed. The…
A: Given:A freight car moves along a frictionless level railroad track at constant speed.The freight…
Q: A spring is used to launch a mass along a horizontal frictionless surface. Before launch, a force of…
A: Initial equilibrium force, Mass, Spring constant, Initial speed of the mass,
Q: A 2.0 lb. rock and a 20.0 lb. rock are dropped from rest at 50.0 m above the ground. Ignoring air…
A: Mass of rock 1: m1 = 2.0 lb = 0.907 kg Mass of rock 2 : m2 = 20.0 lb = 9.07 kg Height of building: h…
Q: 8. The driver of a car steps on the gas, and the car accelerates with acceleration a. When writing…
A: Option 1 The normal force is always acting normal to the object. Which is wrong statement. Option 2…
Q: m/s. 1) Draw a sketch of the situation, labeling all of the phy
A:
Q: Gravitational potential energy-Kinetic energy: A chain with total length L is placed on a…
A: Let mass per unit length be λ. Initially the positing of center of mass…
Q: 16. A roller coaster engineer (yes, there is such a thing) is considering three different designs…
A: The three different designs for roller coaster are represented as : "X" , "Y" , "Z". The initial and…
Q: 6. You are designing a pulley/counterweight system to lift fuel rods in and out of a nuclear…
A: a) Let speed of both is v after moving by H By energy conservation (1/2)(1.5M+2M)v2 = 2MgH - 1.5gH…
Q: A stone is thrown vertically upward and feels no air resistance. Upon rising, a.its kinetic energy…
A: Required : The correct option.
Q: A skater skates down a frictionless ramp from a height of 5.0 m. What is his speed at the bottom of…
A: To determine the skater's speed at the bottom of the ramp, we can use the conservation of mechanical…
Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…
A: Given:- A box of mass m = 4.0 kg The elevator is moving up at a steady speed u = 5.0 m/s The…
Q: Jessica pulls her sister Katie in a wagon. The wagon and Katie together have a mass of 28.5 kg.…
A:
Q: A block is given a short push and then slides with constant friction across a horizontal floor.…
A: Let a block slides over the floor as shown below, Here F is the force applied in a short push. fr…
Q: The 40 kg crate is traveling to the right with an initial v0=1.2 m/s, when a person begins to pull…
A: Given, mass of block = 40 kg initial velocity = 1.2 m/s
Q: 2. A 45.0 kg boy is initially seated on the top of a hemispherical ice mound of radius 20.0 m. He…
A: Given data: The mass of boy is m=45 kg. The radius of mound is r=20 m.
Q: Two objects are moving at equal speed along a level, frictionless surface. The second object has…
A:
Q: A person riding a bike at 15 mph is in an accident. They are wearing a helmet. How does the padding…
A: On the outside, a helmet has a strong plastic shell, while on the inside, it contains foam. If you…
Q: If the net work done on a particle is zero, which of the following statements must be true? a. The…
A:
Q: 2 Your answer is partially correct. Try again. A proton (mass m = 1.67 x 1027 kg) is being…
A:
Q: m = 325 kg h1 = 19.5 m h2 = 4.7 m A roller coaster car of mass m is rolling down the track,…
A:
Q: The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a…
A: Solution:
Q: Two objects, A and B, are sliding with equal speeds along a level frictionless surface. Object A is…
A:
Q: A box starts with a velocity of 10 m/s and falls along the frictionless path shown below. What is…
A: Apply conservation of energy at each points, At B,…
Q: A knight has an idea to break into a fortress by knocking a wall down with a rolling boulder. The…
A:
Q: You release a frictionless cart at the top of each of the 2 ramps. Both carts are released from…
A: Given that both the cart is released from a frictionless surface at the same height and same…
Q: A 1500 kg car skids to a halt on a wet road where 4 = 0.51. You may want to review (Pages 141 - 145)…
A:
Q: A car speeds up while the engine delivers constant power. Is the acceleration greater at the…
A: To determine: The acceleration is greater at the beginning of this process or at the end of the…
Q: Two identical sleds slide down two frictionless hills, each starting from rest at the top of its own…
A: The relation between the speeds and distance travelled s is v2-u2 =2as , where v is the final speed…
Q: A block of mass 2.0 kg is moving to the right and changes its speed from 3.0 m/s to 1.0 m/s. Match…
A: Given data: Mass (m) = 2.0 kg Initial velocity (Vi) = 3.0 m/s Final velocity (Vf) = 1.0 m/s…
Q: A 16-kg rock is going to be moved either vertically or horizontally. Consider the acceleration due…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Use G = 6.674 × 10-¹1 N m²/kg² to answer below questions. a. Evaluate the gravitational potential energy between two 5.00-kg spherical steel balls separated by a center-to-center distance of 16.1 cm. Hint (a) U = ×10-8J b. Assuming that they are both initially at rest relative to each other in deep space, use conservation of energy to find how fast will they be traveling upon impact. Each sphere has a radius of 5.4 cm. Hint (b) x10-5 m/s V=Block 2 shown below slides along a frictionless table as block 1 falls. Both blocks are attached by a frictionless pulley. Find the speed of the blocks after they have each moved 2.0 m. Assume that they start at rest and that the pulley has negligible mass. Use m₁ = 2.0 kg and m₂ = 4.0 kg. 2 Dr 1q5
- At the playground, Logan slides down each of the frictionless slides shown. At the top, he is given a push so that he has the same initial speed each time. At the bottom of which slide is he moving the fastest? Slide A Slide B Slide C a. Slide A o b. All slide are the same O c. Slide B O d. Slide C2) You are driving 2018 Honda Civic and are stuck behind 2018 Toyota Tundra. a) What is the increase in kinetic energy of your car as you speed up from 5 m/s to 12 m/s? b) What is the increase in kinetic energy of your car as you speed up from 12 m/s to 19 m/s? c) What do you conclude form (a) and (b)?Homework
- A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. a. Determine the kinetic energy possessed by the skydiver.b. Determine the potential energy possessed by the skydiver.c. Determine the total mechanical energy possessed by the skydiver.3. Which of the following statements correctly describes the relationship between an objects kinetic energy and its speed? a. E k is directly proportional to the speed of the object b. E k is directly proportional to the speed squared of the object c. E k is inversely proportional to the speed of the object d. E k is inversely proportional to the speed squared of the object e. none of the above describe the relationshipFor exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at a constant speed in a time of 1.60 s. For the second time, the athlete completes the same task in 1.50 s. Match the answers with questions. metabolic energy metabolic power A. decreases B. increases C. not enough information D. stays the same
- A student stands at the top of a building of height 50 m. He throws two identical balls with a speed of 20m/s, one up, the other down. If air resistance is included which ball strikes the ground with higher speed? A. The ball thrown upward B. The ball thrown downward C. Both balls will have the Same speedA 1400 kg car delivers a constant 42 hp to the drive wheels. We assume the car is traveling on a level road and that all frictional forces may be ignored.A) What is the acceleration of this car when its speed is 10 m/s?B) If the speed of the car is doubled, does its acceleration increase, decrease, or stay the same? ExplainIn the figure, a small, initially stationary block is released on a frictionless ramp at a height of 3.0 m. Hill heights along the ramp are as shown in the figure. The hills have identical circular tops, and the block does not fly off any hill. Which hill is the first the block cannot cross? What does the block do after failing to cross that hill? The normal force on the block least? * 3.5 m (4) 2.5 m 1.5 m (3) 3.0 m (2) 0.5 m O 3, Moves backwards, at the top of 1 O 3, oscillates between 2 an 3, at the bottom of 2 and 3 O 4, Moves backwards, at the top of 3 O 3, Moves backwards, at the top of 3