F (N) 30 t (s) -30 A 3.0 kg object is moving to the right with a speed of 2 m/s when it experiences the force shown below. (Hint: To the right is positive direction) What are the object's speed and direction after the force ends? -13.5 m/s +13.5 m/s -7.5 m/s +7.5 m/s
Q: A soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. A soccer player kicks the…
A: Mass of the ball = 0.420 kg Initial speed = Vi = 2 m/s Final speed = Vf = 6 m/s Force applied = F =…
Q: Starting from rest, a 28.0 kg28.0 kg child rides a 8.75 kg8.75 kg sled down a frictionless ski…
A: Given Mass of the child mc=28.0kg Mass of the sled ms=8.75kg Total mass M=mc+ms M=28.0+8.75…
Q: Q2: The 1500-kg car has a velocity of 30 km/h up the 10-percent grade when the driver applies more…
A: Given : mass of the car, m=1500 Kg Initial velocity of the car, u=30 Km/h Final velocity of the car,…
Q: Junry pulls his wife, who’s mass is 50 kg and who is sitting on a swing with rope of length 5 m,…
A: Mass: m = 50 kg Length of rope: l = 5m Initial speed : u = 0 m/s Initial angle: θ1 = 50o Final…
Q: A 2.0 kg object is moving to the right with a speed of 1.0 m/s when it experiences the force shown…
A: Given:Mass of the object = 2 kgInitial speed of the object = 1 m/s
Q: A 0.140 kg baseball is thrown with a velocity of 26.9 m/s. It is struck with an average force of…
A: F∆t=mvf--vi∆t=mvf--viF
Q: Two blocks, M38.00 kg and m3D2.00 kg are touching and moving across a rough floor (k=0.12 at a speed…
A:
Q: Two blocks are connected by a light string that passes over a frictionless tcy as in the figure…
A:
Q: Hi I am in physics I, and they have the problem: In a baseball game, the 145g ball reaches the…
A: it is not (0,1+5 kg) it is 0.145 kg typing error.Mass of the ball is 145 grams = 0.145 kg
Q: Someone has played a practical joke on you, and your favorite chair is stuck at rest in the middle…
A:
Q: A crane drops a 1.7 kg steel ball onto a steel plate. The ball’s speeds just before impact and after…
A:
Q: A body is falling freely under the action of gravity alone in vacuum. Which of the following…
A: As the body freely falling from a particular height, the height of the body decreases. So, the…
Q: Xyrus throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5…
A: Force is defined as the rate of change of momentum. F= dP/dt P= m*v
Q: In an intersection, a bus moving at (100i) m/s and a truck moving at (200j) m/s collided with each…
A:
Q: A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below.…
A: Given:At x = 0u = 0.450 m/sMass of object, m = 3 kg
Q: A 7.0-kg rock is subject to a variable force given by the equation F(x) = 6.0 N - (2.0 N/m)x + (6.0…
A: Given :- m = 7 kg u= 0 F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2
Q: Two objects are connected by a light string passing over a light, frictionless pulley as shown in…
A: a)By energy conservation law, the kinetic energy gained by mass m2 will be equal to the potential…
Q: Each of the boxes shown below is pulled for 15 m across a level, frictionless floor by the force…
A: In the given scenario, the floor where boxes are kept is frictionless. The mass doesn't matter since…
Q: Jestoni pulls Junry whose mass is 55 kg and who is sitting on a swing with rope of length 4 m,…
A: Given: The mass (m) of Junry is 55 Kg. The length (h) of the rope is 4 m. The angle (θ) rope makes…
Q: A net force along the x-axis that has x-component Fx = −12.0N + (0.300N/m2)x2 is applied to a 5.00…
A:
Q: (f) What is the speed of the mass after it has moved 5.0 m? O 4.34 m/s O 2.67 m/s O 3.44 m/s O1.67…
A:
Q: 75. ao A net external force is applied to a 6.00-kg object that is initially at rest. The net force…
A: Determine the work done,
Q: JABBI Two objects are connected by a light string passing over a light, frictionless pulley. The…
A: Given, mass of the object, m1 = 5.00 kgm2 = 3.00 kg initial height above the ground, h = 4.0 m
Q: Two objects are connected by a light string passing over a light, frictionless pulley as shown in…
A: (a)The total energy of an isolated system must be conserved. Take the table as the reference for…
Q: A 34.g golf ball is at rest on a tee. A golfer swings his club and hits the ball so that the club…
A: Given: The mass of the golf ball is 34 g. The average force is 390 N. The duration of force is 5.9…
Q: A golf club strikes a 0.062-kg golf ball in order to launch it from the tee. For simplicity, assume…
A: Suppose a golf club hits a ball having mass m with the force F and the golf club is in contact with…
Q: A car of mass 1200 kg climbs a 300 hill with vertical height of 100 m. If the car has a net forward…
A: Given: Mass (m) = 1200 kg Force (F) = 70000 N
Q: m/s 3 1 2 3 'y m/s 1. An object of mass of 4.0 kg is initially moving with a velocity ū, as shown.…
A:
Q: A 15-g bullet is shot vertically into an 2-kg block. The block lifts upward 8.0 mm (see the figure).…
A: Mass of bullet (Mbullet) = 15x10-3 kg Mass of block (Mblock) = 2 kg height (h) = 8x10-3 m
Q: Two objects are connected by a light string passing over a light, frictionless pulley as shown in…
A:
Q: Particle A has mass m. Particle B has twice the mass of Particle A. The same constant force F acts…
A: According to the work-energy theorem, the amount of workdone on an object is equal to the change in…
Q: A net force along the x-axis that has x-component Fx = -12.0 N + (0.300 N/m2)x2 is applied to a 5.00…
A:
Q: A 6.0 ✕ 104 kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets are…
A: Given a 6.0✕104 kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets…
Q: Alex throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 4.5…
A:
Q: 19. What causes space capsules to become hot when they re-enter the earth's atmosphere? A. The…
A: 1. The friction of air causes the space capsule to heat up.
Q: During a serve, a tennis racket exerts an average force of 250 N on a 80-g tennis ball, initially at…
A: Given data: Force (F) = 250 N Mass (m) = 0.080 g Initial velocity (Vi) = 0 m/s Time (t) = 0.005 s…
Q: Two objects are connected by a light string passing over a light, frictionless pulley as shown in…
A:
Q: rock (rock 1) is flying in the sky towards another rock, rock 2. Rock 1 has a mass of 60 kg, and…
A:
Q: R 2. A marksman holds a rifle of mass m = 3.00 kg loosely, so it can recoil freely. He fires a…
A:
Q: 7. Two objects are connected M by a light string passing over a light, frictionless pulley as shown…
A: m1 = 5 kg m2 = 3 kg h = 4 m
Q: 12 A 2.0 kg object moving to the right with speed of 0.50 m/s experiences the force is shown. What…
A: The force experienced by the object is, F=2 N The time interval of the object expiring a force is,…
Q: A ball of mass m =1.80 kg is released from rest at a height h = 65.0 cm above a light vertical…
A: (a) From the equation of motion, the speed of the ball just as it touches the spring can be…
Q: A net external force is applied to a 6.85-kg object that is initially at rest. The net force…
A: Given information: A force versus displacement graph is given The mass of the object, m=6.85 kg The…
Q: Sam, whose mass is 80 kgkg , takes off across level snow on his jet-powered skis. The skis have a…
A:
Q: Two objects are connected by a light string passing over a light, frictionless pulley as shown in…
A:
Other possbile answer choices
+0.5 m/s
-0.5m/s
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 3 images
- A block of mass m1 = 20.0 kg is connected to a block of mass m2 = 30.0 kg by a massless string that passes over a light, frictionless pulley. The 30.0-kg block is connected to a spring that has negligible mass and a force constant of k = 250 N/m as shown in Figure P7.73. The spring is un-stretched when the system is as shown in the figure, and the incline is frictionless. The 20.0-kg block is pulled a distance h = 20.0 cm down the incline of angle = 40.0 (so that the 30.0-kg block is 40.0 cm above the floor) and released from rest. Find the speed of each block when the 30.0-kg block is 20.0 cm above the floor (that is, when the spring is unstretched). Figure P7.73Two objects of masses m1 = 0.56 kg m2 = 0.88 kg are placed on a horizontal frictionless surface and a compressed spring of force constant k = 280 N/m is placed between them as in Figure P6.28a. Neglect the mass of the spring. The spring is not attached to either object and is compressed a distance of 9.8 cm. If the objects are released from rest, find the final velocity of each object as shown in Figure P6.28b. Figure P6.2810 kg weight starts at rest and then pushed rightly by a force of 59 N for 8 s on a horizontal, frictionless floor. force is removed, the weight hits a second weight with mass M, that is at first at rest, both move together at 25 m/s. Wha's the speed of the 10 kg weight after being pushed for 8 s (and before the collision)?
- 18 - A vehicle spends 40 kW of power and moves at a smooth speed of 360 km / h. Find out how many N is the forward thrust caused by the engine?A) 120B) 360C) 200D) 400E) 900Jane needs to swing across a river filled with man-eating crocodiles in order to rescue Tarzan from danger. However, she must swing into a constant horizontal wind force, F, on a vine that is initially at an angle of ? with the vertical (see Fig. P5.73). Use these values to solve the problem: Jane's mass = 49.0 kg, Tarzan's mass = 80.0 kg, D = 50 m, F = 140 N, L = 40 m, ? = 24.6, and ? = 56.5°. With what minimum speed must Jane begin her swing in order to just make it to the other side? If she can make it to the other side with zero initial speed, what is her final speed (enter this value with a negative sign)?______ m/s Once the rescue is complete, Tarzan and Jane must swing back across the river. With what minimum speed must they begin their swing? If they can make it to the other side with zero initial speed, what is their final speed (enter this value with a negative sign)?______ m/s7. A car with mass of 1300 kg accelerates from rest to 100 km/hr. in a distance of 200 m. Find the average force of the car’s engine. * Use g=9.8 a. 5, 453 N b. 701 N c. 4, 87 N d. 2, 920 N e. 2, 508 N 5. Jessica is riding on a merry-go-round on the outer horse that sits at a distance of 8.0 m from the center of the ride. Jessica’s sister, Julie, is on a inner horse located 6.0 m from the ride’s center. The merry-go-round turns around once every 40.0 s. What is the centripetal acceleration of Julie and her horse? Use g=9.8 a. 3.5 m/s^2 b. 2.73 m/s^2 c. 0.15 m/s^2 d. 0.20 m/s^2 e. 1.34 m/s
- You and a friend from high school are off-roading through Ocala National Forest in your friend’s Jeep (mass of 1800 kg), when a Florida panther runs onto the path. You swerve to miss the panther, but slide into a muddy ditch and get stuck. Luckily, your friend has a winch on their Jeep, which you connect to a tree as shown in the figure. The ground between the Jeep and the tree has a steady slope with an angle of 5 degrees, and the coefficient of kinetic friction between the muddy ground and the rubber tires is 0.15. Consider that the winch is being used to pull the Jeep out of the ditch at a steady speed. a. How much does the gravitational potential energy (in Joules) of the Jeep change as it is pulled a distance of 5 m up the slope? b. How much work (in Joules) is done by the tension force in the winch as it pulls the Jeep a distance of 5 m up the slope? c. If the maximum power output of the winch is 6.6 horsepower (about 5000 W), what is the maximum speed (in m/s) at which the Jeep…You and a friend from high school are off-roading through Ocala National Forest in your friend’s Jeep (mass of 1800 kg), when a Florida panther runs onto the path. You swerve to miss the panther, but slide into a muddy ditch and get stuck. Luckily, your friend has a winch on their Jeep, which you connect to a tree as shown in the figure. The ground between the Jeep and the tree has a steady slope with an angle of 5 degrees, and the coefficient of kinetic friction between the muddy ground and the rubber tires is 0.15. Consider that the winch is being used to pull the Jeep out of the ditch at a steady speed, while for part c the speed of the Jeep can change. a. Is the mechanical energy of the Jeep conserved? Give two different reasons why or why not. b. What is the work done by the normal force as the jeep is pulled up the slope? c. Assume that the Jeep is initially at rest, when you start the winch operating at its maximum power output of 6.6 horsepower (about 5000 W). After 2 seconds,…Hi I am in physics I, and they have the problem: In a baseball game, the 145g ball reaches the batter with a speed of 15.0m/s. The batter hits the ball with a force as shown in exact oppositie direction. The peak force (F max) is 1500N. Find the ball speed right after the hit. It was solved like: J= mvf - mvi area=1/2*b8h J= area = 1500(6)/2 + 1500(2)/2 J=6000 J=6.0 N*s 6.0 N*s = (0.1 +5kg)vf - (0.145kg)(-15) solve for vf vf=26.38 I really don't understand where 0.1 came from. If you can just break down i bit how this is solve that would be great. Thanks!
- A volleyball weighing 0.38 kg approaches Zina with a velocity of 3.8 m / s. Zina hits it and gives the ball a speed of 2.1 m / s. What average force did the girl apply if the interaction time between her hands and the ball is 0.015 seconds?A ? = 20.0 [kg] block slides down a ? = 35.0◦ incline as shown, leaving the end with a speed of ?? = 1.10 [m/s]. At the same time, a ? = 70.0 [kg] cart, whose top end is located h = 2.00 [m] below the end of the chute, moves to the left with a speed of ?? = 2.00 [m/s], and catches the block as it falls. Once the cart catches the block, both move with the same speed. You may ignore friction. A. What is the speed of the block just as it hits the cart? B. What is the velocity of the block-cart system after the cart catches the block? C. What's the change in energy of the cart and block immediately before and immediately after the collision?During an ice show a 75.0 kg skater leaps into the air and is caught by an initially stationary 60.0 kg skater. What is their final velocity in meters per second assuming negligible friction and that the 75.0 kg skater's original horizontal velocity was 4.00 m/s? (Enter a number.)?m/s How much kinetic energy is lost in joules? (Enter a number.)?J