2. What is the acceleration along the ground of a 10 kg wagon when it is pulled with a force of 44 N at an angle of 35° above the horizontal? a. 0.23 m/s^2 b. 0.28 m/s^2 c. 2.52 m/s^2 d. 3.60 m/s^2

A spring gun that is mounted at the edge of a 2.0-m-high table launches a steel ball at an angle of 230 above the horizontal with an initial speed of 7.0 m/s. What is the total time of flight of the steel ball? (Assume that g = 9.81 m/s2.)   a. 0.80 s   b. 0.60 s   c. 0.40 s   d. 1.0 s   e. 1.2 s

46.

1.) A projectile is fired from the top of a cliff 100m high with a velocity of 450 m/s directed at 45 degrees to the horizontal. Based from this problem, wow high the projectile will rise? a. none b. 5,604.442m c. 4,840.246m d. 6,004.008m e. 5,160.550m   2.) Three forces, F1=2Ni+3Nj, F2=-10Nj and F3=3Ni+1Nj-5Nk, act on a particle. Find the net force on the particle. a. 5Ni−6Nj−5Nk b. 5Ni+6Nj+5Nk c. 5Ni+6Nj−5Nk   d. 5Ni−6Nj+5Nk

Q4. A stone was dropped from a cliff of height 100 m. Ignoring air resistance, how long will it take the stone to reach ground? juaiļ, o ú 49 49 =4 t -4.9t Q5. A stone was dropped from a cliff of height 100 m. Ignoring air resistance, what will be the final speed of the stone when it reaches ground? Q6. An object has an initial velocity of 8 m/s and acceleration of 2 m/s?, how far the object will move in 10 seconds?

Which of the following descriptions corresponds to a ball tossed vertically upward? Air resistance can be neglected. a. The velocity decreases linearly from v_0 to v_f, with v_0>0 and v_f<0. b. The velocity increases linearly from zero to v_f. c. The position first increases linearly and then decreases linearly as a function of time. d. The acceleration decreases linearly from g to zero.

Which acceleration below would you feel the most? a. 5 m/s^2 b. 10 m/s^2 c. 15 m/s^2 d. 20 m/s^2

3. One object dropped from the top of a tall building, and one second later a second object is dropped. Neglecting air resistance, the distance between the falling objects will a. Be constant b. Decrease c. Increase d. Depend on their weight e. Depend on the speed of the plane. Explain your reasoning:

The leaning tower of Pisa is 56 m tall. Supposedly Galileo investigated the behavior of falling objects by dropping them from the top of this tower and timing their descent. How long would it take an object to fall 56 m if air effects are negligible?   a. 3.33 s b. 3.38 s c. 3.83 s d. 3.88 s

The angle Theta= 77 degrees . Calculate the moment of the force=90 about point O for the condition theta.