Question 13 1 pts A horizontal force of 5 N accelerates a 4-kg object from rest...
A force of 30 N accelerates a 2.0 kg object from rest for a distance of 3.0 m along a level, frictionless surface; the force then changes to 15 N and acts for an additional 2.0 m. (a) What is the final kinetic energy of the object? (b) How fast is it moving?
A 3.10-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.460. Determine the kinetic frictional force that acts on the box for each of the following cases. (a) The elevator is stationary. N (b) The elevator is accelerating upward with an acceleration whose magnitude is 2.30 m/s2. N (c) The elevator is accelerating downward with an acceleration whose magnitude is 2.30 m/s2. N
A 2.00-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.440. Determine the kinetic frictional force that acts on the box for each of the following cases. (a) The elevator is stationary. N (b) The elevator is accelerating upward with an acceleration whose magnitude is 2.00 m/s2. N (c) The elevator is accelerating downward with an acceleration whose magnitude is 2.00 m/s2. N
An upward force of 322 N is applied to a 15 kg object. If a downward drag force of 31 N acts on the object what is the acceleration of the object? g = 10 m/s2
A 2.40-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.480. Determine the kinetic frictional force that acts on the box for each of the following cases. (a) The elevator is stationary. N (b) The elevator is accelerating upward with an acceleration whose magnitude is 1.20 m/s2. N (c) The elevator is accelerating downward with an acceleration whose magnitude is 1.20 m/s2.
An object weighing 3.7 kg is suspended from the ceiling of an accelerating truck. If the truck accelerates in the positive x-direction at a rate of a = 5.66 & m/s2, find: (a) The tension in the string. 41.87 N (b) The direction of the string from the object to where it is tethered. S =511 X +524 X 2 2/2 points Previous Answers Forces for Gerard Besides the gravitational force, an object weighing 2.11 kg is subjected to a...
5. A passenger of mass 85 kg is riding in an elevator while The scale only reads the normal force it exerts on the (Note that 1 b 0.453 kg 4.45 N) a) What standing on a platform scale. does the scale read in pounds (lb) when the elevator is not moving? elevator is moving upward with an acceleration of 3.5 m/s?? c) What does the scale read in pounds (b) when the elevator is same acceleration of 3.5 m/s??...
Suppose a 2 kg object is falling through the air and accelerating downwards at 8 m/s2. Taking g = 10 m/s2 What is the magnitude and direction of the force of air resistance on it? 2N downward 2N upward 1N downward 1N upward
018 (part 1 of 2) 10.0 points An elevator accelerates upward at 1.2 m/s The acceleration of gravity is 9.8 m/s What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 019 (part 2 of 2) 10.0 point:s If the same elevator accelerates downwards with an acceleration of 1.2 m/s2, what is the upward force exerted by the elevator floor on the passenger? Answer in units of N
018 (part 1 of 2) 10.0 points An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 019 (part 2 of 2) 10.0 points If the same elevator accelerates downwards with an acceleration of 1.2 m/s, what is the upward force exerted by the elevator floor on the passenger? Answer in units of