An astronaut named Johnny is driving to their rocket when they suddenly need to break. The car weighs 1900 lbs and is moving at 35 mi/hr when the astronaut slams on the breaks on dry road. Find the amount of time needed for the car to stop. Use k = 0.7. How many forces are present in the a direction? 1 It'll take the car 11.412 X seconds to stop.
Q: dragster accelerates from rest down a road of length d = 400.0 m. In the absence of any friction the…
A: The downward force on the dragster along its motion is given by
Q: The two masses in the figure are released from rest. After the 5.0 kg mass has fallen 1.5 m, it is…
A: According to the kinematics equation, find the acceleration. Substitute the values,
Q: A block slides down a frictionless plane having an inclination of θ = 20.00. The block starts from…
A:
Q: What is the magnitude of the average drag force ?drag exerted on the car?
A: work done by non conservative forces = change in total energy work done by drag force = total final…
Q: Two masses are being pulled up a 30.0 degree incline by a force F parallel to the incline. The…
A: Given Data: The acceleration of two masses is, a=1.00 m/s2 The mass of the first body is, m1=200 kg…
Q: Two roomates are disagreeing over where to place a 90 kg couch. Katie is pushing the couch to the…
A: Newton's second law of motion is, Fnet=ma Here, m is mass and a is acceleration. Assume Rosa is…
Q: Question 15 A car traveling at 26.4 m/s hits a tree. A passenger in the car, who has a mass of 64.0…
A: Initial velocity (u) = 26.4 msmass (m) = 64 kg distance moved (d) = 56 cm = 0.56 m final velocity…
Q: Two blocks are arranged at the ends of a massless string as shown in the figure. The system starts…
A: Given m=4.36kg, M=5.77kg. Let a be the acceleration of the system. From the FBD of mass m, T - mg=-…
Q: 48. John fires a projectile in a Uwindsor lab and notes that the 20.0g projectile travels 785 m/s.…
A: John fire a projectile and note that the20 gram projectile penentrate the clay ball. We need to find…
Q: A 8.0 x 10* kg spaceship is at rest in deep space. Its thrusters provide a force of 1200 kN. The…
A:
Q: Using a modified pulley system, you need to lift 450 N of concrete a total distance of 5 meters…
A: Lifting force F1 = 450N Distance moved d = 5m If we pull the distance D = 15m The required force F2…
Q: You are in charge of improving the safety of a carnival ride. The ride involves a 165 kg cart…
A:
Q: 1. A mass moving at 1.70 m/s slides down a ramp angled at 30.0° to the horizontal. After the mass…
A:
Q: 1. A 45.0 kg object is pushed up an incline as shown with a horizontal force of 300.0 N. The object…
A:
Q: a. You're biking down a hill at 11.375 m/s. You want to apply the brakes and stop over a distance of…
A: Given: Mass of rider + bike = m = 73.125 kg Inclination angle of the road = θ = 15.7 degrees…
Q: 8d. A block of dry ice slides at constant velocity along a smooth, horizontal surface (no friction).…
A: A block of dry ice slides at constant velocity along a smooth, horizontal surface (no friction).…
Q: A 100 gram wooden block is placed on an inclined ramp and released from rest. The ramp is tilted at…
A: Given: The mass of the object is 100 g. The coefficient of the static friction force is 0.3. The…
Q: 42. John is moving a 14 kg box in a Phsyics lab on an approximately frictionless surface. If the box…
A:
Q: 1. A proton of mass 1.67 x 10-27 kg is initially at rest. It then moves through 1.80 cm along a…
A:
Q: a. You are a newly graduated astronaut preparing for your first trip into space. Plans call for your…
A: For part a) Velocity= 500 m/s time 2.40 minutes weight= 735 N = 75 kg (as, 1 kg =…
Q: A box is at rest on a level floor. μ = 0.4 and μ = 0.3. You pull the box horizontally just hard…
A:
Q: A block of mass m = 16.8 kg is sliding on a surface with initial velocity v = 23.2 m/s. The block…
A:
Q: m₁ and m2 are connected by a light string as shown in the graph. Assume the pulley is frictionless.…
A:
Q: 3. A skier of mass m starts from rest at the top of a frictionless, snow covered hill angled at 0…
A:
Q: A train is traveling up a 2.68" incline at a speed of 4.30 m/s when the last car breaks free and…
A:
Q: 8. The forces in FIGURE EX6.80 act on a 2.0 kg object. What are the values of a, and ay, the x- and…
A:
Q: A spacecraft that is initially at rest turns on its engine at t=0. If its mass is 3000 kg and the…
A:
Q: A compressed spring of k = 60 N/m is released from rest on a frictionless surface. What is the…
A:
Q: A runaway train car that has a mass of 1.68e+4 kg travels at a speed of 7.60 m/s down a track.…
A:
Q: rt A That is the passenger's weight before the elevator starts moving? xpress your answer with the…
A: Givent=5 s (time of motion)u=0 (initial speed of elevator)v=12 m/s (final speed of elevator)m=65 Kg…
Q: The 16-kg crate is subjected to a force having a constant direction and a magnitude F = 100 N. When…
A: Draw free diagramFind Normal force.
Q: Answer both please
A:
Q: The graph shows the speed of from breaking at 10 s. a 2360.0 kg car as it slows down after the…
A:
Q: Two roomates are disagreeing over where to place a 72 kg couch. Katie is pushing the couch to the…
A: Given : Mass of a couch (m) = 72 kg Force with which Katie is pushing the couch (Fkatie) = 410 N…
Q: ans. a) 3.41 N a) What is the tension in the string? m/sec. The length of the string is 1.2 m. The…
A:
Step by step
Solved in 2 steps with 2 images
- Two blocks are connected via a massless frictionless pully system. The hanging block is 3 kg. The other block is on a ramp of 25◦ and has a mass m. The coefficients of friction between the block on the ramp and the ramp are: µs = .8 and µk = .5. a. What is the minimum mass m that will not slip? b. If the minimum mass is nudged, it will start being pulled up the incline. What will the acceleration be when that happens?A block is being pulled up an inclined plane by a force with magnitude F=45.0 N as shown In the figure above. The block has a mass of m =1.35 kg. The coefficient of kinetic friction between the block an the surface of the incline plane is µ = 0.287. The inclined plane makes an angle \theta= 31.7 degrees with respect to the horizontal. What is the magnitude of the acceleration of the mass?The surface of a pool table is h=0.710 m from the floor. The winner of a competition wants to know if he has broken the world speed record for the break shot of 32 mph (about 14.3 m/s). A. If the winner’s ball landed d=4.95 m from the table’s edge, calculate the speed of his break shot v0. Assume friction is negligible. B. At what speed v1 did his pool ball hit the ground? Image is attached below. Please show all work.
- a. How far does she travel in 8 s? 3.) The driver of mass 80 kg is strapped to the seat of his Ferrari. If she comes to a stop after traveling at 30 m/s in 2 s, determine the force on the driver from the seatbelt.Help!!!9. a. An arrow is fired from a bow with a velocity of 69.2 m/s. The arrow has a mass of 0.082 kg. The arrow travels 0.855 m as it's being released/ while the force of the taunt string acts on it. What is the change in KE, AKE, of the arrow? 196.33 Previous submissions: b. What was the force of the bow string? 229.63 Previous submissions: J N V incorrect V incorrect
- The following information pertains to questions 1, 2, and 3. A workman pulls a sled across an asphalt road using a rope at angle 0 above the horizontal direction. The workman pulls with 1,000[N] of force. The coefficients of friction of the sled with the road are u=1.00 and µ=0.70. The sled has mass m. The sled is initially at rest. T710Q0[N]. 1) Which expression gives the magnitude of fmax for the situation illustrated above? A) mg B) mg – 1000cos(0) C) - mg + 1000cos(0) D) mg-1000sin(0) E) mg+ 1000sin(0) F) None of the abovei need help with this pleaseYou are in an elevator that is initially at rest. At t=0, it heads downward and speeds up as a function of time. It experiences a velocity given by v(t) = (−2.00t²ĵ)² m S a) What is the normal force that you experience at t=1.20 s? Assume you have a mass of 70.0 kg. b) How far did the elevator drop in 1.20 s?
- 4.15You want to lift a heavy box with a mass L = 89.0 kg using the two-ideal pulley system as shown. With what minimum force do you have to pull down on the rope in order to lift the box at a constant velocity? One pulley is attached to the ceiling and one to the box. L kg NI watched a lot of Looney Toons when I was a kid, and liked that the Roadrunners legs would spin for a second or two before their claws caught traction. a. With a coefficient of kinetic friction 0.2 what acceleration will the roadrunner experience while their feet are sliding accross the ground? b. How far forward will the roadrunner drift in a half second, starting from rest under this acceleration? c. After catching traction the Roadrunner accelerates away, travelling 10 m to get offscreen in one fifth of a second. What was their coefficient of static friction?