21. Choose the free body diagram that matches the following: A bundle of hay is pulled to the left with increasing speed. * Fnorm Frict Fapp Fgrav Fgrav O B O A Fnorm Fnorm Ftens Frict Frict Fgrav Fgrav D.

Q: You’ve just kicked a rock, and it is now sliding across the ground about 2 meters in front of you.…

A: Given: You’ve just kicked a rock, and it is now sliding across the ground about 2 meters in front of…

Q: 2. A 0.8kg cup sits on top of a car, which is moving at a constant velocity of 10m/s to the right.…

A: Given: The mass of the cup sitting on the top of the car is m = 0.8 kg The car moving with the…

Q: You are standing still on a bathroom scale. The scale shows your weight 140 lbs. How much is the…

A:

Q: A 150-kg bag of rocks weighs 3200 N on Planet X. What is the acceleration due to gravity of Planet…

A: weighs  w=mg

Q: On a separate occasion, Michael threatened to jump from the roof of his office building as a…

A: (a) final velocity  v=u+gt=0+9.8 m/s21.2 s=11.76 m/s≈12 m/s

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!