Determine the resultant moment of the three forces about x-axis, y-axis, and z-axis. Fe-1150j| N hm A-1250N-(-400 N 4

A 6-kg object is lifted upward a distance of 6 m by a vertical force of 80 N. Find the change in kinetic energy of the object. OA There is no change in the kinetic energy or speed, since the object is lifted at dynamics equilibrium. OB. -354 J OC 480 J OD 126.8 J O E None of the above

partialy A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air resistance is negligible, and the collision is elastic. The masses of the ball and block are, respectively, 1.7 kg and 2.5 kg, and the length of the wire is 1.23 m. Find the velocity (magnitude and direction) of the ball (a) just before the collision, and (b) just after the collision. +y (a) v = 4.912 m/s (b) v = i m/s

10 kg - mass  500 N/m - k 0.2 m = x 30° = θ (theta) 0.2 = μk REQUIRED d = ?

K L water M A 5.10 kg mass attached to a spring is travelling at a speed v; at point K, as shown above. While it is falling it is also being pushed by a spring (k = 475.00 N/m) compressed by 1.60 m (at point K). The mass travels 1.60 m (between K and L) then hits a pool of water at point L where the water exerts an average force of 54.80 N [upwards]. At point L the spring is no longer pushing and begins to stretch (in other words, at point L, x=0). The mass eventually stops at point M. If the distance between L and M is 7.45 m, determine the initial velocity of the mass (v;). Enter an answer with three digits and in S.I. units.

A man with a mass M stands on the right side of a board with a mass M. He moves to the left side of the board that has a length L. There is no friction between the board and the surface so it is free to move. What is the new position of the man relative to his original position? L/2 OL L to the right 2L 4L

Problem 5: A car's bumper is designed to withstand a 4.0-km/h (1.1-m/s) collision with an immovable object without damaging the body of the car. The bumper cushions the shock by absorbing the force over a distance. D A Calculate the magnitude of the average force on a bumper that collapses 0.22 m while bringing a 750-kg car to rest from an initial speed of 1.7 m/s, in newtons. F = sin() cos() tan() 7 8 9 HOME cotan() asin() acos() E 4 5 6 atan() acotan() sinh() 1 2 3 cosh() tanh() cotanh() END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up!

2. A proton traveling a 4 m/s to the right collides into a stationary proton. The initially stationary proton moves at an angle 02 60° wrt the x-axis after the collision. Assume that the collision was elastic. What are the final speeds of each of the protons? (Keep your answers exact, no decimals) y V2f m2 m1 Vli vif

H6.