DETAILSA 630 kg car pulling a 515 kg trailer accelerates forward at a rate of 2.29 m/s². Assume frictional forces on the trailer are negligible. Ignore air dreg(a) Calculate the net force (in N) on the car.Nmagnitudedirection-Select-(b) Calculate the net force (in N) on the trailer.magnitudedirection(c) What is the force (in N) exerted by the trailer on the car?magnitudedirectionmagnitudedirection.-Select-(d) What is the resultant force exerted by the car on the road? (Assume that the forward direction is along the x-direction to the right and that the direction points upward Enter the magnitudein N and the direction in degrees measured from the left of the -y-direction)N(measured from the left of the -y-direction)

Mass of car = 630 kg Mass of trailer = 515 kg Acceleration = 2.29 m/sec2

DETAILS A 630 kg car pulling a 515 kg trailer accelerates forward at a rate of 2.29 m/s². Assume frictional forces on the trailer are negligible. Ignore air drap (a) Calculate the net force (in N) on the car. magnitude direction (b) Calculate the net force (in N) on the trailer magnitude direction (c) What is the force (in N) exerted by the trailer on t magnitude direction car? (4) What is the resultant force exerted by the car on the road? (Assume that the forward direction is along the direction to the i in N and the direction in degrees measured from the left of the -y-direction) magnitude N direction (measured from the left of the -y-direction)

DETAILS A 630 kg car pulling a 515 kg trailer accelerates forward at a rate of 2.29 m/s². Assume frictional forces on the trailer are negligible. Ignore air drap (a) Calculate the net force (in N) on the car. magnitude direction (b) Calculate the net force (in N) on the trailer magnitude direction (c) What is the force (in N) exerted by the trailer on t magnitude direction car? (4) What is the resultant force exerted by the car on the road? (Assume that the forward direction is along the direction to the i in N and the direction in degrees measured from the left of the -y-direction) magnitude N direction (measured from the left of the -y-direction)

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 9PE: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a...

See similar textbooks

Similar questions

A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after driving the nail 1.00 cm into a board. Assume constant acceleration of the hammer-nail pair. a. Calculate the duration of the impact. b. What was the average force exerted on the nail?
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (b) Draw a free-body diagram, including all forces acting on the system. (c) Calculate the acceleration. (d) What would the acceleration be if friction were 15.0 N?
As a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the tail fin and the downward force due to gravity. A record Chinook salmon has a length of 1.50 m and a mass of 61.0 kg. If this fish is moving upward at 3.00 m/s as its head first breaks the surface and has an upward speed of 6.00 m/s after two-thirds of its length has left the surface, assume constant acceleration and determine (a) the salmons acceleration and (b) the magnitude of the force F during this interval.
Two teams of nine members each engage in tug-of-war. Each of the first team’s members has an average mass of 68 kg and exerts an average force of 1350 N horizontally. Each of the second team’s members has an average mass of 73 kg and exerts an average force of 1365 N horizontally. (a) What is magnitude of the acceleration of the two teams, and which team sins? (b) What is the tension in the section of rope between the teams?
In Example 5.7, we pushed on two blocks on a table. Suppose three blocks are in contact with one another on a frictionless, horizontal surface as shown in Figure P5.43. A horizontal force F is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 4.00 kg, and F = 18.0 N. (a) Draw a separate free-body diagram for each block. (b) Determine the acceleration of the blocks. (c) Find the resultant force on each block. (d) Find the magnitudes of the contact forces between the blocks. (e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing backing by leaning against the wall with your back pushing on it. Every hammer blow makes your back sting. The supervisor helps you put a heavy block of wood between the wall and your back. Using the situation analyzed in parts (a) through (d) as a model, explain how this change works to make your job more comfortable.
Figure 4.39 shows Superhero and Trusty Sidekick hanging motionless from a rope. Superhero's mass is 90.0 kg, while Trusty Sidekick's is 55.0 kg, and the mass of the rope is negligible. (a) Draw a free-body diagram of the situation showing all forces acting on Superhero, Trusty Sidekick, and the rope. (b) Find the tension in the rope above Superhero. (c) Find the tension in the rope between Superhero and Trusty Sidekick. Indicate on your free-body diagram the system of interest used to solve each part. Figure 4.39 Superhero and Trusty Sidekick hang motionless on a rope as they try to figure out what to do next. Will the tension be the same everywhere in the rope?
What force does a trampoline have to apply to a 45.0-kg gymnast to accelerate her straight up at 7.50 m/s2? Note that the answer is independent of the velocity of the gymnast—she can be moving either up or down, or be stationary.
A system can have a nonzero velocity while the net external force on it is zero. Describe such a situation.
In Example 4.5, we pushed on two blocks on a table. Suppose three blocks are in contact with one another on a frictionless, horizontal surface as shown in Figure P4.49. A horizontal force F is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 4.00 kg, and F = 18.0 N. (a) Draw a separate free-body diagram for each block. (b) Determine the acceleration of the blocks. (c) Find the resultant force on each block. (d) Find the magnitudes of the contact forces between the blocks. (e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing backing by leaning against the wall with your back pushing on it. Every hammer blow makes your back sting. The supervisor helps you put a heavy block of wood between the wall and your back. Using the situation analyzed in parts (a) through (d) as a model, explain how this change works to make your job more comfortable. Figure P4.49
A 2200 kg car, initially travelling at 80.0 km/h West, slams on the brakes and it comes to rest over a distance of 33.0 m calculate the force required to stop the car. Use correct units and sig digits include the magnitude and direction of the force.
Superman must stop a 105-km/h train in 100 m to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 × 105 kg. A.) Determine the force that must be exerted on the train. Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value if the direction of the force is in the direction opposite to the initial velocity. FTS =_____________________ ______________________ B.) Compare the magnitudes of the force exerted on the train and the weight of the train (give as %%). Express your answer using two significant figures. FTS/mg = _______________________% C.) How much force does the train exert on Superman? Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the force is in the direction of the initial velocity and negative value if the direction of the force is…
Using the Newton's first law, explain why ina. frictionless environment a car that is under motion will not stop moving?