After skiding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.6 m/s. Miranda runs after her at a velocity of +4.5 m/s and hops on the inner tube. How fast do the two of them slide across the snow together on the inner tube? Ashley's mass is 54 kg, and Miranda's is 52 kg. Ignore the mass of the inner tube and any friction between the inner tube and the snow.

A crane drops a 1.7 kg steel ball onto a steel plate. The ball's speeds just before impact and after are -8.5 m/s and 5.3 m/s, respectively. If the ball is in contact with the plate for 0.048 seconds, what average force does the ball exert on the plate during impact?

A falcon with a mass m1= 1.18 kg is diving at a speed of v1= 26.1 m/s at an angle of θ= 55.6 degrees below horizontal. Note that x is horizontal and y is vertical, as shown in the diagram. A pigeon, whose mass is m2= 0.55 kg, is flying in the positive x direction at a speed of v2= 7.1 m/s. The falcon catches the pigeon, and they move as one. Neglect gravity and air resistance. Part (a)  Write an expression for the x component of the final velocity.  Part (b)  Write an expression for the y component of the final velocity.  Part (c)  What is the magnitude, in meters per second, of the final velocity?  Part (d)  What is the angle, in degrees below the horizontal, that the final velocity makes with the x axis?

an iron ball with a mass of 67.5 kg is traveling with an initial velocity of 20.5 m/s. the ball is hit with a hammer, which remains in contact with the ball for 0.20 sec.  how much force must the hammer hit the ball with to cause it to change directions?

A bullet of mass 2 kg is headed at horizontal speed 60 m/s toward a block of mass14(2 kg) = 28 kg resting on a horizontal frictionless surface. The bullet strikes the blockand comes to rest relative to the block somewhere deeply embedded inside the block.What average force did the block exert onthe bullet while it was coming to a stop insidethe block, if the stopping process took 0.04 s? 1. −200 N2. Not enough information is provided toanswer.3. −2800 N4. 3000 N5. 200 N6. 2800 N7. −3000 N8. Zero, since the bullet comes to rest relative to the block.

On the set of a new Hollywood movie, a 74.1-kg stunt actor (Max Payne) is tossed straight out of a helicopter hovering (stationary) at a height of 43.4 meters. The stunt actor is thrown from the helicopter at a speed of 4.17 m/s, eventually landing in the water below.  Determine the stunt actor's impact speed and assume negligible air resistance. You can use the approximation that g = 10 m/s2.

An amusement park features a set of light railcars, currently resting on a straight, level section of track. Each railcar has a mass of 18 kg. Ellen and her younger brother Tim are seated in two of these railcars, which are initially at rest with the rubber buffers just touching each other. Ellen's mass is 42 kg, while Tim's mass is 32 kg. Ellen pushes Tim's railcar so that it moves away with a speed of 3.0 m/s relative to the track. Assuming that the frictional forces on the railcars are small, how far the railcars will have travelled after 2.0 s?

A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a speed of 0.490 m/s. The total mass of the sled, man, and rock is 94.0 kg. The mass of the rock is 0.270 kg and the man can throw it with a speed of 15.5 m/s. Both speeds are relative to the ground. Determine the speed of the sled (in m/s) if the man throws the rock forward (i.e., in the direction the sled is moving). m/s Determine the speed of the sled (in m/s) if the man throws the rock directly backward. m/s

A 7.500 E+3-kg truck moving east at 10.3 m/s collides with a 2.500 E+3-kg car moving west at 35.0 m/s. The collision takes place over a time interval of 0.5 s. The car and the truck stick together after the collision. Find the force (in N) of the car on the truck during the collision. Call this force positive if it points to the east, and negative if it points to the west. (Could you give an explanation on how to transfer/ convert E +3)

A hockey player slaps a puck into a cushion, which brings the puck to rest.  If the puck's initial velocity was +40 m/s and it has a mass of 170 g, what force does the cushion apply to the puck?  Assume the cushion acts on the puck for 0.03 s and the surface that the puck slides on is frictionless.