Exercises 1. Suppose a force acts on a 4.00 kg object in the x-direction. The force varies with t...
Learning Goal: To understand the relationship between force, impulse, and momentum. The effect of a net force ΣF⃗ acting on an object is related both to the force and to the total time the force acts on the object. The physical quantity impulse J⃗ is a measure of both these effects. For a constant net force, the impulse is given by J⃗ =F⃗ Δt. The impulse is a vector pointing in the same direction as the force vector. The units...
A single, nonconstant force acts in the +?+x direction on an 5.06 kg5.06 kg object that is constrained to move along the ?x‑axis. As a result, the object's position as a function of time is ?(?)=?+??2+??4?=7.38 m?=4.57 m/s2?=0.478 m/s4x(t)=A+Bt2+Ct4A=7.38 mB=4.57 m/s2C=0.478 m/s4 How much work is done by this force from ?=0 st=0 s to ?=2.34 s?
A force moves an object in the direction of the force. The graph shows the force versus the object's position (a) Find the work done when the object moves from 0 to 2.0 m. (b) If the mass of this object is 1.5 Kg and it started from rest find the final velocity at 2.0 m.
Instructions: Answer all four question 1. A3 kg object has the velocity graph shown. a) What is the object's initial momentum? (Include units) CA CEY v, (m/s) 2 spld 1 - b) What is the object's final momentum? 2 3 4 -1 c) What impulse does the object experience? d) Draw a corresponding graph of Force vs time. scale for the force. Include a F(N)
An object experiences a net force in the positive x-direction that varies with time as shown in the figure below. By how much does the momentum of the particle change from t = 0 to 10.0 S? Answer: 48.0 kg m/s.
A 3.00-kg object is free to slide on a horizontal surface. The object is attached to a spring of spring constant 300 N/m ,and the other end of the spring is attached to a wall. The object is pulled in the direction away from the wall until the spring is stretched 70.0 mm from its relaxed position. The object is not released from rest, but is instead given an initial velocity of 2.50 m/s away from the wall. Ignore friction....
An object is moving in the x direction only and its acceleration is given by a(t) =-7 m/s^5 t^3. If its initial velocity is 17 m/s in the x direction, what is the displacement of the object, in meters, when the object stops? Include a negative sign if the displacement is in the -x direction.
A particle with a mass of 3.00 kg is acted on by a force F, acting in the x-direction. If the magnitude of the force varies in time as shown in the figure below, determine the following.(a) Impulse of the force (in kg · m/s) (b) final velocity of the particle (in m/s) if it is initially at rest (c) Find the final velocity of the particle (in m/s) if it is initially moving along the x-axis with a velocity of -2.00...
The magnitude of the net force exerted in the x direction on a 3.90-kg particle varies in time as shown in the figure below. (a) Find the impulse of the force over the 5.00-s time interval. I = ? (N · s) (b) Find the final velocity the particle attains if it is originally at rest. Vf = ? (m/s) (c) Find its final velocity if its original velocity is -3.10 i m/s. Vf = ? (m/s) (d) Find the...
A force is applied to a 3.5 kg object moving in the x-direction with the following profile over time: a. What value of F_max gives an impulse of 6.0 N s? b. If the object had an initial speed of 4.2 m/s, what was the change in kinetic energy after the force was applied?