On his way to class, a student on a skateboard is accelerating on a downhill stretch. Which of the following statements is true? (Select all that apply.) V The skateboarder's acceleration is perpendicular to the net force. O The skateboarder is moving in the direction of the net force. V The skateboarder is subjected to a net external force in the direction of motion. O The skateboarder's acceleration is in the direction of the net force.

On his way to class, a student on a skateboard is accelerating on a downhill stretch. Which of the following statements is true? (Select all that apply.) V The skateboarder's acceleration is perpendicular to the net force. O The skateboarder is moving in the direction of the net force. V The skateboarder is subjected to a net external force in the direction of motion. O The skateboarder's acceleration is in the direction of the net force.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A woman stands on a scale in a moving elevator. Her mass is 72.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9390 N. What does the scale read during the acceleration? N
A block of mass M is suspended at rest by two strings attached to walls, as shown in the figure. The left string is horizontal with tension force T2 and and the right string with tension force T, makes an angle e with the horizontal. g is the magnitude of the gravitational acceleration. Which of the following statements is true? Select all apply. T2 M O The net force along the y-component is non-zero. O The acceleration along the x-component is zero. O The net force along the x-component is zero. O The acceleration along the y-component is non-zero. O The acceleration along the y-component is zero. O The acceleration along the x-component is non-zero. O The net force along the y-component is zero. O The net force along the x-component is non-zero.
Please help me to answer this. Answer only Number 7
g force is max gravetional force
Two blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. Block A has a mass of 18 kg and Block B has mass m. A constant horizontal force F= 75 N is applied to Block A. In the first 3.0 seconds after the force is applied, block A moves 15 m to the right.1. Write Newton's second law for block A along the horizontal direction and solve for the force exerted by the rope on block A.2. Write Newton's second law for block B along the horizontal direction and solve for itss unknown mass m. ( F rope on A = F rope on B)
Please answer both part a and part b
A cardboard box rests on the floor of an elevator. The box has a mass m = 2.75 kg and the elevator has an upward acceleration of a. a. Write an expression for the sum of the forces acting on the box in the y-direction, ΣFy, given that up is the positive y-direction. Your answer should be in terms of FN, m, and g. b. Write an expression for the normal force, FN, that the block experiences in terms of the elevator's acceleration, the block's mass, and the acceleration of gravity. c. If the elevator's acceleration has a magnitude of g in the downward direction, what would the normal force, FN1 be in Newtons? d.If the elevator's acceleration had a magnitude of g in the upward direction, what would the normal force FN2 be in Newtons?
A teenager of mass m1 = 56 kg pushes backwards against the ground with his foot as he rides his skateboard. This exerts a horizontal force of magnitude F foot = = 18.5 N. The skateboard has m2 = 2.6 kg. a. Write an expression for the magnitude of the horizontal component of force that the ground exerts on the teenagers foot, F ground. b. Write an expression in terms to given quantities for the magnitude of the skateboard acceleration, a , while the teenager is pushing backwards on the ground? c. What is the numerical value of the magnitude of the acceleration, a, in m/s square?
calculate the magnitude of a normal force on a 22.7 kg for the following circumstances. c. the block is resting on the floor of an elevator that is accelerating upward at 2.53 m/s^2. d. the block is on the level surface and a force of 115 N is exerted on it at an angle of 40.8 degrees below the horizontal.
In the figure below, the coefficient of kinetic friction between the block and Inclined plane is 0.27 and angle 0 is 59°, What is the block's acceleration (magnitude and direction) assuming the following conditions? (a) It is sliding down the slope. m/s2 O down the slope O up the slope (b) It has been given an upward shove and is still sliding up the slope. m/s2 O down the slope O up the slope
Which of the following is incorrect regarding Newton's Third Law of Motion? O A force acting on a body is always the results of its interaction with another body. Whenever two bodies interact, the two forces that they exert on each other are always equal in magnitude and direction. Forces always comes in pairs, that is for every action, there an equal but opposite reaction. The force exerted by a on bis equal to (-)force exerted by b on a
An object is moving forward with a constant velocity. Which statement about this object MUST be true? O The net force on the object is zero. O No forces are acting on the object. O The net force on the object is in the forward direction. The acceleration of the object is in the forward direction.