The small body has a speed va = 4.0 m/s at point A. Neglecting friction, determine its speed at point B after it has risen 0.68 m. Is knowledge of the shape of the track necessary? 0.68 m 4.0 m/s B Answer: Vg = i m/s

Block A has a mass of 55 kg, and block B has a mass of 11 kg. The coefficients of friction between all surfaces of contac are µs= 0.20 and Hk= 0.15. 25° If P= 0, determine the acceleration of block B. (You must provide an answer before moving on to the next part.) The acceleration of block B is m/s $ 25°.

please answer the question below and include explination. many thanks

A worker develops a tension T in the cable as he attempts to move the 54-kg cart up the 18° incline. Determine the resulting acceleration a of the cart if (a) T = 142 N and (b) T = 208 N. Neglect all friction, except that at the worker's feet. The acceleration a is positive if up the slope, negative if down the slope. T 54 kg 11° m/s² 18° Answers: (a) T = 142 N, a = (b) T = 208 N, a = i i m/s²