Lineman A has a mass of 100 kg and traveling at 4 m/s when he collides with Lineman B who has a mass of 90 kg and is traveling at 4.5 m/s. Both players stayed on their feet. At what velocity will one lineman push the other?

A constant net force of 300N is applied to accelerate a cart in a frictionless surface from rest to a velocity of 30 m/s in 5s. What is the mass of the cart? 2. A 0.15 - kg baseball approaches a baseball bat at 30 m/s. If it is in contact with the baseball bat for 0.003 s, what is the average contact force between the ball and the racket? Ignore the air resistance.

At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 700 m/s2 and the vertical or y component of its acceleration is 750 m/s2. The ball's mass is 0.32 kg. What is the magnitude of the net force acting on the soccer ball at this instant?

Baby Kellyn was bouncing up and down in a "bouncy chair" which hangs from a chain that is attached to a spring. At one particular time, after jumping in the air, Kellyn and the chair were moving downward with a speed of 1.7 m/s while speeding up at a rate of 3.3 m/s?. Kellyn has a mass of 4.8 kg and the chair has a mass of 1.2 kg. Calculate the force (in units of newtons) that the chain exerted on the chair at this time. Consider a positive force to point up and a negative force to point down. The sign, positive or negative, of your answer is important.

It may appear at first glance that Newton's 2nd and 3rd laws are independent claims. This, however, is not true - Newton's 3rd law is simply a consequence of Newton's 2nd law. In this problem, you will prove Newton's 3rd law for the normal contact force between two objects, using only Newton's 2nd law. Consider two blocks with masses m₁ and m₂ in contact, with external forces F₁ and F2 applied, as shown in the figure. The free body diagram for each block is also given, with internal forces fa and f, as shown. F₁ F₁ fa fb ΣF = ΣF = m₁ m2 Submit F₂ Complete the equations of motion for the entire system, as well as blocks 1 and 2 individually. Note, the forces have a signed magnitude, where positive values correspond to the positive x-direction ΣF= = (m₁ + m₂) a = m₁ a = m₂ a Use the above equations to write fa in terms of only fr: fa = m₁ You have used 0 of 4 attempts m₂ F₂ Save Calculator

Two figure skaters, one weighing 655 N and the other 755 N, push off against each other on very smooth ice. If the heavier skater travels at 1.50 m/s, how fast the lighter one will travel?

Your friend's 11.1 g tassel hangs on a string from his rear-view mirror. When he accelerates from a stoplight, the tassel deflects backwards toward the rear of the car. If the tassel hangs at an angle of 6.89° relative to the vertical, what is the acceleration of the car?

Do Two skydivers are holding on to each other while falling straight down at a common terminal speed of 61.90 m/s. Suddenly, they push away from each other. Immediately after separation, the first skydiver, who has a mass m₁ of 94.80 kg, has a velocity U₁ with the following components ("straight down" corresponds to the positive z-axis). U1, y = 4.750 m/s U1,2 = 61.90 m/s What are the x- and y-components of the velocity v₂ of the second skydiver, whose mass m₂ is 57.70 kg, immediately after separation? Assume that there are no horizontal forces of air resistance acting on the skydivers. U2,x U1,x= 5.430 m/s || 6.96 Incorrect What in the chanos in binstis sur 'the sustan AV m/s 2 U2,y 6.088 Ø Attempt 2 Incorrect m/s

My sister Crystal of mass M1=50kg is on an ice covered sidewalk with her dog Buster, who has mass M2=38kg. They are initially distanced d=5.00m apart. By pulling on the massless leash, my sister exerts a constant force F=30.00N on Buster, Buster slides towards her. How fast is Buster moving when he and my sister meet?  (The leash is not rigid, so the distance can change between them. They also end at the same point, which means even if you cannot solve for their position, you can set them equal to one another)

A man ( mass = 100 kg) fall freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of .2s. The average force exerted on her by the ground is + 2000 N, where the upward direction is taken to be the positive direction. A) from what height did he just fall? Assume the only force acting on him during the collision is that of the ground. B) suppose instead of the man, a 5 kg rubber ball was dropped from the same vertical distance and the ball bounced back conserving the linear momentum. What would be the velocity of the ball just when it bounced back?