Att = 0, force F-=(6.30i +6.10j +3.50k)N begins to act on a 2.90 kg particle with an initial speed of 3.60 m/s. What is the particle's speed when its displacement from the initial point is d = (1.60î + 2.80j + 7.80k) m ?

A single force F(x) = −3.7x (in newtons) acts on a 1.0 kg body. When x = 3.0 m, the speed of the body is 4.8 m/s. What is its speed (in m/s) at x = 1.7 m? m/s

An object of mass ?=8.9 kg is free to move on a horizontal surface without any friction. It is initially at rest and starts moving under a net force of ?⃗=(3 N)?̂+(4 N)?̂. What is the object's speed in m/s after moving 1 meter?

An object with mass ? = 1.6 kg is released from rest at a height ℎ = 8 m from the top ofan inclined plane. It slides down the inclined plane without friction then slides across arough surface with a coefficient of kinetic friction ?? = 0.4.  What is the speed of the object after it slides 4.2meters across the rough surface?

Let Á = 2.0 m/s i – 9.0 m/s j+5.0 m/s k and let B = 2.0 kg kg j+ 2.0 kg k ,what is A· B?

If R = 5.75 cm, M = 786 g, and m = 980 g in the figure, find the speed of the block after it has descended 52.9 cm starting from rest. Solve the problem using energy conservation principles. Number i (a) Units M M M 3 C R m 7₂ (b)