True or false? you push a heavy car by hand. The car, in turn, pushes back on you. Since the forces are equal and opposite, the car won't move.
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True or false?
you push a heavy car by hand. The car, in turn, pushes back on you. Since the forces are equal and opposite, the car won't move.
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- A hawk accelerates as it glides in the air. Does the force causing the acceleration come from the hawk itself? Explain.A person stands on a scale inside an elevator at rest. The scale reads 800 N. The elevator accelerates upward at the rate of 2.4m/s2 . What does the scale read then?Imagine you are at Disneyland on a big roller coaster, sitting with a friend in the front seat of the cart. You ride slowly up to the top of the first hill, then stop momentarily before descending. What force is acting on you? What will happen next to you (and your mass, and the cart’s mass) as a result of this force?
- On a cold winter day, a car tries to get moving on an icy road but does not get anywhere. What happens? Explain it in terms of forces and motion.A person stands on a scale inside an elevator at rest . The scale reads 800 N. a) what is the persons mass? b) The elevator accelerates upward momentarily at the rate of 2 m / s ^2. What does the scale read then? c) The elevator then moves with a steady speed of 5 m / s. What does the scale read now?71. A man stacks a small block of wood on top of a larger block and then moves both by pushing the bottom block. The large block has a mass of 25 kg, and the smaller block has a mass of 15 kg. The coefficient of static friction between the two blocks is 0.45. How fast can the man accelerate the blocks without having the smaller block slide off the top? (4.2, 4.3) ™AI
- See attachedA stack of two crates is being accelerated upwards by two cables. The cables are directly attached to crate 1 and the tension in each cable is 3248 N. You may assume that the masses of the cables are negligible compared to the masses of the crates. The acceleration of the crates is? bottom crate crate 1 is 109 kg. the top crate is 248 kg.A net force of X Newtons acts on a fun size bounty bar of mass m, causing it to accelerate at 4.0 m/s2. If the same net force X acts on a full size bounty bar of mass 2m, its acceleration will be 1.0 m/s/s 2.0 m/s/s 4.0 m/s/s 8.0 m/s/s
- A 60 kg teenager is standing on a skateboard. This is on earth, so a= -g = -10m/s^2. Draw a free body diagram for the teenager only. Draw a free body diagram for the tennager and the skateboard. What force does the skateboard exert on the teenager?While passing a slower car on a busy highway, you accelerate your 1500 kg car from 17.0 m/s to 90.0 km/h in 15.0 s.(i). What is the force of the car? (ii). How far have you traveled in 20 s?A mother and her 5-year old daughter are ice skating. While at rest, they face each other then push off eachother with their hands, sending them in opposite directions. Assuming the mother weighs much more than thedaughter, what motion results? The mom accelerates faster because she could push with more force. The little girl accelerates faster because her mom pushed her with more force. They both accelerate at the same rate because their forces are equal and opposite. Although the forces are equal and opposite, mom has more inertia. Hence momtravels slower than the daughter