Weight is one type of forces, it is a vector ( magnitude and direction, always vertically downward). it is an extrinsic properties, depending on surroundings. While Mass is a scalar, not depending on its surroundings. a. True b. False

14. A cart has a mass of 50 kg. 4 people are pulling on it. One pulls North with a force of 100N. The second pulls East with a force of 200N. A third pulls South with a force of 150N. The final person pulls West with a force of 80N. Find the resultant force. Give its direction in degrees from East.

1. Four horses are pulling a wagon down a street in a parade. the front two horses can each pull 1500N (forward) on their reigns, while the back two horses can each pull 1200 N (forward). the force of friction of the wagon wheels on the ground is 550 N (backward). Starting with a free body diagram, calculate the net force on the wagon.  2. What is the displacement and direction of the resultant vector if a soccer player runs 55.0m at an angle of N27 degrees West, and then runs 23.0m at an angle of S5 degrees West from her new location? Draw a diagram, please! 3. A golf ball, which is lying directly on the ground, is hit with a velocity of 22m/s at an angle of 30 degrees above the horizontal. Determine the golf balls: a). time of flight b). range c). maximum height

3. Some measurements are estimates based on your best "guess". Estimate the mass of the following objects by comparing to known masses, like the 10 g, 20 g, etc. masses. 200 kg Guess the mass of the tape 50 kg Guess the mass of the tennis ball 350 kg Guess the mass of your notebook/iPad/Cell phone 0.5 kg Guess the mass of the wire

1) A force is a push or a pull on an object. We experience forces every day as we lift, push, or carry objects. A force is a vector quantity, which means it has both a magnitude and a direction. In the SI system of units, force is measured in units of newtons, abbreviated N. (One newton is a little less than one-quarter pound.) For example, if you hold an apple in your hand, you exert a force with a magnitude of about 1 newton, directed upward.   Forces are vector quantities, which means they have which of the following? a. Magnitude only  b. Direction only       c. Both magnitude and direction   A 20 N force is acts on a rock. From the information given, we know which of these? a. Both the magnitude and direction of the force on the rock b. The magnitude of the force on the rock       c. The direction of the force on the rock   While kicking a ball, a kicker's foot applies an 80 N force to the ball at an angle of 45 degrees above horizontal. From the information, we know which of…

6. The reading on the vernier caliber is: a. 1.05 cm b. 4.46 cm c. 1.06 cm d. 4.48 cm 7. For the force diagram 1 14 0 1,46 5 2 H cm scale 10 Vernier sca

11. Consider the plate from the previous question. The floor provided an impact force that actedon the plate. It acted on the plate very suddenly—it was a mere fraction of a second. If theforce acted on the plate for 0.00024 s, calculate the force of impact.

8. An object is pulled across a rough horizontal surface with an applied force of 300 N [40o below the horizontal]. The applied force is slowly rotated down toward the horizontal, decreasing the 40o angle. What will happen to the force of friction acting on the object and the acceleration? a. Both increase.b. Both decrease.c. Friction decreases and acceleration increases.d. Friction increases and acceleration decreases.e. None of the above statements are accurate.

10. In the figure below, a mass of 500 kg is held motionless in the air by a 120-kg boom and a rope. Find the tension in the rope. Find the force exerted on the boom by the pin at P. The angles are 0 = 30.0° and o = 45.0°. P

MCQ 4. The first of two identical boxes of mass m is sitting on level ground. The second box is sitting on a ramp that makes a 20° angle with the ground. The normal force of the level ground on the first box is NL; the normal force of the ramp on the second box is NR. Which statement is correct? a. NR= NL = mg. b. N₁ mg; NR= mg sin 20°. C. NL = mg; NR = mg cos 20°. d. Nr.= mg; NR= -mg cos 20°. e. NR=-NL = -mg.