Question

A 10,000-kg railroad car A, traveling at a speed of 24.0 m/s strikes an identical car, B, at rest. If the cars lock together and move at the same speed 12.0 m/s as a result of the collision, how much of the initial kinetic energy is transformed to thermal or other forms of energy? Round your answer to0 decimal places

A marble column of diameter 1.54 m and area 1.86 m² supports a mass of 59 600 kg.Calculate the strain, ε in the column. (The Young’s modulus for marble, E_m = 50 x 10⁹ Pa)

A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf-club was in contact with the ball for 3.5 x 10^-3 s. Calculate the average force exerted on the ball by the golf-club Round your answer to1 decimal place

State the two conditions for the mechanical equilibrium of a rigid body.

Answer 1