An elevator is moving upward with a speed of 11 m/s. Three seconds later, the elevator...
An elevator is moving upward with a velocity of 15 m/s. Three seconds later, the elevator is still moving upward, but its velocity has been reduced to 6.0 m/s. What is the average acceleration of the elevator during the 3.0 s interval? After 3.0 s, If it maintains the same acceleration, what is the displacement of the elevator after 5 second time interval ? What will be the velocity after the 5 second ? Hint: Keep in mind that the...
An elevator is initially moving upward at a speed of 13.08 m/s. The elevator experiences a constant downward acceleration of magnitude 4.16 m/s2 for 2.79 s. (a) Find the magnitude and direction of the elevator's final velocity. magnitude direction ---Select--- upward downward none (b) How far did it move during the 2.79 s interval?
An elevator is initially moving upward at a speed of 12.60 m/s. The elevator experiences a constant downward acceleration of magnitude 3.92 m/s2 for 2.97 s (a) Find the magnitude and direction of the elevator's final velocity. magnitude direction !--Select--# (b) How far did it move during the 2.97 s interval?
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward force due to gravity. When the elevator is accelerating upward, which is greater, T or w? Tw Both forces are equal. (b) When the elevator is moving at a constant velocity upward, which is greater, T or w? Tw Both forces are equal. (c) When the elevator is moving upward, but the acceleration is downward, which is...
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward force due to gravity. When the elevator is accelerating upward, which is greater, T or w? T w Both forces are equal. (b) When the elevator is moving at a constant velocity upward, which is greater, T or w? T w Both forces are equal. (c) When the elevator is moving upward, but the acceleration...
You throw a ball upward with an initial speed of 3.0 m/s from an initial height of 1.5 m. After you throw the ball, its acceleration is 9.81 m/s2 downward. Taking upward to be the positive direction, write the position-time equation for the ball's motion. Express your answer in terms of t. t is expressed in seconds.
on a (a) The elevator accelerates upward from rest at a rate of 1.25 m/s? for 1.50 s. What does the scale read during this 1.50s interval? (b) The elevator continues upward at constant velocity for 8.50 s, what does the scale read nos? (c) While still moving upward, the elevator's speed decreases at a rate of 0.700 m/s? for 3.00 s. What is the scale reading during this time? Tutorial In an exciting game, a baseball player manages to...
E. Suppose you are standing on the scale in the elevator and the elevator is accelerating downward with an acceleration smaller than 9.8 m/s2 i. Draw free-body diagrams of yourself, the scale, and the floor of the elevator where it interacts with the scale. ii. How must the magnitude of the force exerted by the scale on you compare with your own weight? iii. How must the reading on the scale compare with the reading you make when the elevator...
Question 11 4 pts A body that was initially moving at 15 m/s is accelerated at a constant rate for 4.0 seconds in the positive x direction. If the final speed of the body is 35 m/s, what was the body's acceleration? O 4.0 m/s2 O 1.6 m/s2 O 9.8 m/s2 O 5.0 m/s O 2.0 m/s2
A 5.0-kg mass is suspended by a string from the ceiling of an elevator that is moving upward with a speed which is decreasing at a constant rate of 2.0 m/s in eachsecond. What is the tension in the string supporting the mass?