1. A sled is being pulled to the left by 5 dogs, each dog pulling with 6 Newtons of force. Find the net force (ignore friction).
2. If a person pulls on a cart to the right with a force of 10N and a second person pulls to the left with a force of 3N, what is the net force on the cart ignoring all other forces?
3. A 2N and 6N force pulls on an object to the right and a 4N force pulls to the left a 0.5kg object. What is the net force on the object if you ignore all other forces?
4. A 20kg bike accelerates at 10m/s^2. With what force was the person pedaling if friction exerted a force of 100N
5. If a person is pushing a cart with a force of +40N, friction is -10N and the cart accelerates at 0.5m/s^2, what is the mass of the cart?
Answers: 1
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An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
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Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?
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Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves
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Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j
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1. A sled is being pulled to the left by 5 dogs, each dog pulling with 6 Newtons of force. Find the...
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