A cart, placed on an incline, will accelerate as it rolls down the ramp. If you incline an air-hockey table at the same angle as the ramp and place the puck on the air table, the puck will accelerate as it slides down the table. How would the acceleration of the air hockey puck compare to the rolling cart while both were on the incline? a)apuck = acart b)apuck > acart c)depends on their masses d)depends on the radius of the cart’s wheels compared to the air hockey puck e)apuck < acart

Time left 0:39:08 In the Figure shown below, m,- 6.0 kg, m, = 4.0 kg, the string and the pulley are massless and there is no friction. The acceleration (a) of the system is equal to red 3.00 on a) 1.96 m/s? b) 2.45 m/s? c) 3.92 m/s? d) 2.80 m/s2 m2 e) 2.94 m/s? f) 4.45 m/s.

12) A rocket of mass (3000 kg) exerts a force of N 5000 on its engine to move as in the adjacent figure. a) Calculate the horizontal acceleration of the rocket. b) If the force exerted by the missile doubles, calculate the acceleration of the missile in this case. c) Reasons: Newton's first law is known as the law of inertia.

Consider a conical pendulum with a bob of mass m = 25.0 kg on a string of length L = 6.00 m that makes an angle of θ = 3.00° with the vertical.a) Draw the direction of the acceleration of the ballb) What causes this acceleration?c) Determine the centripetal acceleration of the bob.d) Determine the speed of the ball

1. The rocket sled shown in the figure accelerates to the right at a rate of 49 m/s². Its passenger has a mass of 64 kg. Consider: The passenger pushes the back of the seat and the bottom of the seat. The resultant of the two forces is the net force of the passenger on the seat. Do they experience a reaction force from the seat? What force is responsible for his horizontal acceleration? NW (a) Calculate the horizontal component of the force F, the seat exerts against his body. Fh=ma= 3136 (b) Compare this with his weight by using a ratio. Fh W = 4.99 (c) Calculate the vertical component of the force N the seat exerts against his body. N = N (d) Calculate the direction and magnitude of the total force the seat exerts against his body. Give the angle as measured above the horizontal. 0 = 11.32 degrees N F₁ = 3198.23 net

A) find the acceleration of the elevator (magnitude and direction) B) what is the acceleration if the scale reads 770N? C) what is the tension in the cable if the scale reads 410 N?

Question 9 Figure shows the velocity graph of a 65 kg student in an elevator. What is the student's apparent weight (magnitude only) att=8.0 s, in Newtons? Use g = 10.0 m/s2. Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. (No unit is'needed in your answer, it is already given in the question statement,) Vy (m/s) 8- 4 t (s) 10 4. 6. 8.

Question 3 Suppose that an astronaut in space while working in the Hubble Telescope in space hits accidentally his thumb with the weightless hammer. Would it hurt? Explain.

A baseball is thrown by the pitcher to the second baseman in an attempt to prevent someone from stealing a base. At some point during this process, your friend says that the sum of the forces exerted on the baseball can be described with the equation ΣF=−mg. Which point during the baseball's motion is your friend referring to? (Neglect air resistance) a. While the second baseman is catching the ball. b. While the pitcher is throwing the ball. c. While the ball is in the air. d. This equation does not describe any part of the ball's trip. Which answer is correct and why?

Q3. Two masses, mi and m2, are connected to each other as shown in figure. Mass m/ slides without friction on the table surface. Both masses have acceleration of magnitude a as shown. How does the tension in the string compare to the weight, m2 g, of mass m₂? A) The tension is equal to m2 g. B) The tension is larger than m2 g. C) The tension is smaller than m₂ g. D) It depends on my being smaller than m2. E) It depends on my being larger than m2. m₁ MacBook Pro m₂ Q4. An object, when pushed with a net force F, has an acceleration of 2 m/s². Now twice the net force is