1. Suppose a bike with a rider on it having a total mass of 63 kg brakes and reduces its velocity from 8.5 m/s to 0 m/s in 3.0 seconds. What is the magnitude of the braking force?
Q: 2. An elevator is moving downward and slowing down at 4 m/s/s. Inside the elevator, a yellow box…
A:
Q: A 5kg object is moving with a constant acceleration. At t=3.0 s the velocity of the object is ů, =…
A: Mass of the object, m = 5 kg Initial velocity at time t = 3 s is Final velocity at time t = 5 s is…
Q: this problem. Traveling at a speed of 19.9 m/s, the driver of an automobile suddenly locks the…
A:
Q: 2. A body with mass m starts at a height h at time =0 with an initial horizontal velocity vs. If the…
A:
Q: 4. A biker is accelerating when she applies the brakes and then speeds up again. The net horizontal…
A:
Q: 9. A 100 kg-motorcycle at rest starts to move from point A with a constant acceleration. At that…
A: According to kinematics S=ut+(1/2)at2 u=Initial speed t=time S= distance travelled a=constant…
Q: A man pushes on a brick wall. With what amount of force does the wall push back on the man? a…
A: 1) a man pushes on a brick wall Let the force exerted by the man on the brick wall = F
Q: A 1540-kg car is traveling with a speed of 12.4 m/s. What is the magnitude of the horizontal net…
A:
Q: A bartender slides a mug the bartender’s hand at ar to the effect of friction be customer's hand 1.0…
A: Given , mass of mug with beer , m = 0.2 kg Initial velocity of mug , u = 2.8 m/s It stopped after…
Q: A constant 12.0-N net force acts for 3.0son a 3.0-kg object. What is the object's change of…
A: A force is an influence that can change the motion of an object. Here, we calculate the object,s…
Q: A 1.5-kg mass has an acceleration of (4.0i - 3.0j) m/s². Only two forces act on the mass. If one of…
A:
Q: What effect does horizontal velocity have on time of flight for a particle undergoing projectile…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: . A biker is accelerating when she applies the brakes and then speeds up again. The net horizontal…
A:
Q: A train is equipped with a 50 Mg engine and three cars which each have a mass of 30 Mg. The train…
A: We know that, if we want to move an object we need to pull or push it externally. Without external…
Q: 14. Cars that are moving along horizontal roads are going to be stopped by plowing into identical…
A:
Q: A block of mass m is dropped from the fourth floor of an office building and subsequently hits the…
A:
Q: A car changes its velocity from 20 m/s [N] to 20 m/s [S] in 5.5s. If the mass of the car is 1500 kg…
A: The expression for the net force is F=ma=mvf-vi∆t=1500 kg-20 ms-20 ms5.5 s North- positive…
Q: A 12.0-kg body initially traveling at 8.00 m/s subsequently experiences a net, constant force that…
A: Given,mass of the object, m = 12.0 kginitial speed, u = 8.00 msfinal speed of the body, v = 18.0…
Q: Starting from rest, a 57.0 kg woman jumps down to the floor from a height of 0.740 m, and…
A: Given, mass of woman, M=57kg Height from she jumps to ground is, h=0.74m The total force exert by…
Q: A box (400 kg) sits inside the trailer of a semitruck traveling at a speed of 25 m/s (~ 55 mph).…
A: As per the guide lines first three sub parts are answered. Kindly post the remaining question as a…
Q: a 1500kg car accelerates uniformly from 30.0 km//hr to 80.0 km/hr in 12.0 sec. what was the net…
A: Given data : Initial velocity of car = 30 km/hour = 8.33 m/s Final velocity of car = 80 km/hour =…
Q: A box is given a brief push up a ramp so that it is initially moving at a speed of 6.25 m/s up the…
A: Given Data: Initially speed of the box vi=6.25 ms Weight of box W=72.4 N Angle of ramp θ=20.5°…
Q: 14. Cars that are moving along horizontal roads are going to be stopped by plowing into identical…
A: SOlution: Given that A: m = 1000 kg, v = 6 m/s B: m =1600 kg, v = 8 m/s C: m =1200 kg, v = 8 m/s 8:…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 202. A person of mass 60 kg is able to exert a constant 1200 N of force downward when executing a jump by pressing against the ground for t = 0.5 s. (a) Draw freebody diagrams for the person during the moments before the jump, executing the jump, and right after taking off. (b) How long would they be airborne on the moon, which has gravita- tional acceleration of moon 1.62 m/s²? =Please and thank you!!
- 71. The following situations show a car towing a trailer. Rank the difference in forces between the force that the car applies on the trailer FcT and the trailer on the car FT/c from largest to smallest. D A a=2 m/s? a = 4 m/s? m = 2000 kg v = 20 m/s a = 0 a = 0 m = 4000 kg v = =20 m/s m = 1000 kg v= 20 m/s = 10 m/s !! .m = 1000 kg v c. AF, > AF, > AF. = AF, d. AF = AF, = AFc = AF, AF, = AF, > AF, > AF. а. D В В D B b. AF, > AF, = AF. = AF, D В B71. A man stacks a small block of wood on top of a larger block and then moves both by pushing the bottom block. The large block has a mass of 25 kg, and the smaller block has a mass of 15 kg. The coefficient of static friction between the two blocks is 0.45. How fast can the man accelerate the blocks without having the smaller block slide off the top? (4.2, 4.3) ™AIHow fast will the fish be moving after swimming 1 m?
- W7 4.6Your forehead can withstand a force of about 6.0 kN before fracturing, while your cheekbone can withstand only about 1.3 kN. Suppose a 140 g baseball traveling at 27 m/s strikes your head and stops in 1.1 ms What force does the baseball exert on your head? What is the magnitude of the force that stops the baseball?1. You are working as a letter sorter in the Post Office. Postal regulations require that employees' footwear must have a minimum coefficient of static friction of 0.5 on a specified tile surface. You are wearing athletic shoes for which you do not know the coefficient of static friction. In order to determine the coefficient, you imagine that there is an emergency and start running across the room. You have a co-worker time you, and find that you can begin at rest and move 4.23 m in 1.20 s. If you try to move faster than this, your feet slip. Assuming your acceleration is constant, does your footwear qualify for the postal regulation? 7
- A 958-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 35.0 m/s. What is the average force exerted on the car during this time? kN eastwardA 2,000 kg car traveling at 30.0 mi/h skids to a stop in 60.0 meters. The force of friction during the skid is (1.0 mi/h = 0.447 m/s) Multiple Choice 2,400 N. 4,200 N. 4,500 N. 3,000 N. 3,750 N.Vmax In a laboratory experiment, a sphere of diameter 8.0 mm is released from rest at t = 0 at the surface of honey in a jar, and the sphere's downward speed v when it travels in the honey is found to be given by v = Vmax (1 - e-t/T), where 0.040 m/s and T = 0.50 s. (a) Obtain an expression for a(t). (b) Draw graphs for v(t) and a(t) for the time interval 0 to 2.0 s. (c) Obtain an expression for x(t), choosing the positive x axis as downward, and draw the graph for this func- tion. (d) Use your x(t) graph to determine the time interval needed for the sphere to reach the bottom of the container if the surface of the honey is 0.10 m above the bottom of the jar. ... =