I. If the speed of a 6.0 kg object changed by 5.0 m/s in 2.0s than...
At t=1.0s, a 0.63kg object is falling with a speed of 6.0 m/s. At t=2.0s, it has a kinetic energy of 25 J. 1. What is the speed of the object at t=2.0s? 2.How much work was done on the object between t=1.0s and t=2.0s?
At t=1.0s, a 0.54 kg object is falling with a speed of 6.5 m/s. At t=2.0s, it has a kinetic energy of 38 J. A.)What is the kinetic energy of the object at t=1.0s? B.)What is the speed of the object at t=2.0s? C.) How much work was done on the object between t=1.0s and t=2.0s?
A 4.0 kg object is moving at 5.0 m/s NORTH. It strikes a 6.0 kg object at rest. The objects have an elastic collision and move in the NORTH or SOUTH direction. The velocity of the 6.0 kg object after the collision is
A 5.0 kg object with a speed of 4.0 m/s collides head-on with a 10 kg object moving toward it with a speed of 5.0 m/s. The 10 kg object stops after the collision. a) What is the post collision speed of the 5.0 kg object? b) Is the collision elastic? c) What is conserved?
A 5.0-kg object is pulled along a horizontal surface at a constant speed by an 11.5 N force acting 30degree above the horizontal. How much work is done by this force as the object moves 7.4 m? 78 j 82 J 85 J 74 J 43 j A trunk is pulled by a constant horizontal force of 12 N at an angle of 15degree above the horizontal. The work done by the applied force after the trunk has move 4.15...
A 1 kg object is moving with a speed of 1.80 m/s in the x direction when it passes the origin, as shown in the figure below. It is acted on by a single force Fx that varies with x. (a) What is the work done by the force from x = 0 to x = 2 m? (Note: You will not be able to calculate the answer directly, but there is a way to estimate it!) J (b) What...
2. A 3.0 kg object moves in the +x direction with a speed of 5.0 m/s. A 8.0 kg object moves in the -x direction with a speed of 2.5 m/s. What is the momentum of this two-particle system? Assume one-dimensional motion, i.e., all vectors and movements occur along a line.
An initially stationary 2.6 kg object accelerates horizontally and uniformly to a speed of 23 m/s in 5.0 s. (a) In that 5.0 s interval, how much work is done on the object by the force accelerating it? What is the instantaneous power due to that force (b) at the end of the interval and (c) at the end of the first half of the interval?
) A point-like charged object with Q1 = +6.0 nC is at the point (0.30 m, 0.00 m); an object with charge Q2 = -1.0 nC is at (0.00 m, 0.10 m), and an object with charge Q3 = +5.0 nC is at (0.00 m, 0.00 m). What are the magnitude and direction of the net force on the +5.0-nC object due to the other two objects? (k = 9.0 × 109 N∙m2/C2) I need help with these question, I'm...
At t=1.0st=1.0s, a 0.42 kgkg object is falling with a speed of 6.5 m/sm/s. At t=2.0st=2.0s, it has a kinetic energy of 38 J What is the kinetic energy of the object at t=1.0st=1.0s? Express your answer using two significant figures. What is the speed of the object at t=2.0st=2.0s? Express your answer using two significant figures.