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This is an F=ma questions. Remember that force and acceleration are vectors. (That's what the boldface font means.)
1) A 14kg object accelerates at (2,4) m/s2. Calculate the magnitude of the force on the object, in Newtons.
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- (Type only the letter of the correct answer) A Ferris wheel has a diameter of 90 m. It makes one revolution every 60 seconds. a. Find the speed of the passengers when the Ferris wheel is rotating at this rate. Choices: a.) 3.04 m/s b.) 6.12 m/s c.) 4.71 m/s d.) 5.08 m/s Ans.: b. A passenger weighs 882 N at the weight- guessing booth on the ground. What is his apparent weight (normal force) at the highest point on the Ferris wheel? Choices: a.) 838 N b.) 926 N c.) 862 N d.) 983 N Ans.:Two forces act on a 2.95 kg object, the gravitational force and a second, constant force. The object starts from rest and in 1.20 s is displaced (4.701 - 3.30ĵ) m. Write the second force in unit vector notation. (Enter your answer in kg · m/s². Assume the gravitational force acts in the -ĵ direction.) kg. m/s²Zach, whose mass is 70 kg, is in an elevator going down at 6.0 m/s. The elevator takes 2.0 s to brake to a stop at the bottom floor. What is his apparent weight, in Newtons? Use g = 10.0 m/s². Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
- 9. Consider the falling object of mass 10 kg in Example 2, but assume now that the drag force is proportional to the square of the velocity. a. If the limiting velocity is 49 m/s (the same as in Example 2), show that the equation of motion can be written as 1 (49² - 1²). 245 dy dt Also see Problem 21 of Section 1.1. b. If y(0) = 0, find an expression for v(t) at any time. Gc. Plot your solution from part b and the solution (26) from Example 2 on the same axes. d. Based on your plots in part c, compare the effect of a quadratic drag force with that of a linear drag force. e. Find the distance x(t) that the object falls in time t. Nf. Find the time T it takes the object to fall 300 m.A 65.0-kg file cabinet is sliding down a rough ramp for a distance of 5.00 m from rest as shown. The friction force on the box is 75.0 N. What is the final kinetic energy of the cabinet at the end of the ramp, in Joules? Use g = 10.0 m/s². Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. 5.0 m 15.0⁰Hi please answer the following question, the answer in the problem is wrong and this answer is wrong too6.25*10^-16 N please make sure to give the right answer. THank you.
- Determine the magnitude of the horizontal reaction (N) at A if P = 255 N and Q = 2324 N. Let x = 2.43 m, y = 2.49 m, and z = 2.09 m. Round off only on the final answer expressed in 3 decimal places. Instead of units, indicate the direction of the horizontal reaction at A: use Rif to the right and L if to the left. ... B L- yConsider the diagram below. Q3 Q2 d2 d1 GIVEN: Q, = +5.00x10-7 C; Q2 = +4.00x10-7 C; Q3 = -8.00x10-7 C; d1 = 5.00 cm; d2 = 8.00 cm. a. Determine the magnitude and direction of the force exerted by Q2 upon Q1. b. Determine the magnitude and direction of the force exerted by Q3 upon Q1. c. Determine the magnitude and direction of the net electric force on Q1.Answer the following questions True or False. Show your Complete Explanations. This is all about General Physics 1 Vectors.
- Answer the following questions. Show your Complete Explanations. This is all about General Physics 1 Vectors.Calculate the final speed of the 2.00-kg object that is pushed for d =25.0 m by the F = 50.0 N force on a level, frictionless floor (see the figure below). Assume the object starts from rest. V = ? 2 kg at rest $20° F d 2 kg 1) Calculate the final speed. (Express your answer to two significant figures.) SApplication I. Direction: Solve the following problem. Put your answer on a separate sheet. 1. A piece of equipment weigh 539 N and 209 N on Earth and Mars, respectively. What is the acceleration due to gravity on the surface of the Mars? 2. Two forces of magnitudes 6.0 N and 4.0 N act on a 3.2 kg body. What is the acceleration produced when these forces are acting in the same direction? What is the acceleration produced when these forces are oppositely directed?