2) A 15kg object moves right at 4.0 m/s and is pushed by a net force...
1) An object at rest is pushed by a net force represented by the graph above. If the mass is 20kg, how fast is it moving: a) after traveling from 0-6 seconds? b) after traveling from 0-26 seconds? F (N) 20 10 t(s) 10 20
Exercises 1. Suppose a force acts on a 4.00 kg object in the x-direction. The force varies with time and is given by F(t)12.0t3 - 8.00 N. At t -0, the object has a velocity of 3.00 m/s in the positive x-direction. Use the impulse-momentum theorem to find the object's velocity after 2.00 s. 2. In a lab experiment, a spring gun projects a metal sphere. The sphere leaves the spring gun with a velocity of 3.00 m/s in the...
13) A block of mass 2.0 Ag is pushed 2.5 m along a frictionless horizontal table by a constant 1o N force directed 28° above the horizontal. The work done on the block by the applied force is. A) 25.0J B) 11.7J C22.0J D) zero What is the total 14) A 0.5 Ag particle has a speed of 4.0 m/s at point A and 6.0 m/s at point B. work done on the particle as it moves from A to...
4) A 20 kg cart is pushed from a force modeled by F in seconds. Assume right is a positive direction. 3t+20 where F is the net force measured in Newtons and t is time a) b) c) What would the units of the numbers 3 and 20 be in the above equation? What is the impulse given to the ball from 0-10 seconds? If the cart was moving left at 4.0 m/s, what speed and direction is the cart...
Problem 2. e below shows the velocity vs. time graph of a 3.0kg object as it moves along the at t 40s? At t 1.0 s z-axis. What is the magnitude of the net force acting on the object (m/s) 3 t (s) Solution when t 1.0 s Fnet|-0 N when t = 4.0 s and IFnet|-3 N
An object has an acceleration of 4.0 m/s/s. If the net force experienced by the object is increased by a factor of 2.5 and if the mass of the object is increased by a factor of 3.3, then the new acceleration wuld be m/s/s. Enter a numerical answer. Che Prog ##.##! View Objectives Quit Assignment
3. The net force acting on a 2.0-kg particle as it is pushed along a horizontal floor (considered along the positive x-axis) varies as shown on the given chart. The velocity of the object at x = 1 m is 3.0 m/s. (a) Find the total work done on the crate along F (N) the floor from x-0 to x-3 m. (b) Estimate the final velocity of the particle at x 3 m. 0 r (m) [(a) -2J; (b) 1.73...
A force of F = 4.0 i + 10.0j Newtons moves an object through a displacement of d=-2.0 i +1.0j meters. The object is initially at rest. $ 16. How much work does the force do to the object? P=14.0i)+(10) N =(-2:01+10 g) m (1 kg) 8 J 17. How fast is the object at the end of the displacement? no friction mass 1.0 10kg
02. A 15-kg crate moves to the right with a velocity of v, m/s when a force, F is applied at time to = 0 s. The force varies as shown in the Figure 2 where tı = 2.25 s, tz = 4.5 s, tz = 6.75 s. The block is moving with an initial velocity, v, = 4.8 m/s, and the force remains constant at -20 N for all times greater than tz. By using principle of linear impulse...
6. A 2.0-kg object moves in a straight line on a horizontal frictionless surface. The graph above shows the velocity of the object as a function of time. The various equal time intervals (sections) are labeled using Roman numerals: I, II, III, IV, and V. The net force on the object always acts along the line of motion of the object Which section(s) of the graph correspond to a condition of zero net force? a. b. Which section(s) of the...