An elastic collision takes place between a 0.050-kg toy car moving at 10 × 10² m/h and a 0.014-kg toy car moving at 20 × 109 mm/yr.  What is the kinetic energy of the system? Express your answer with the appropriate units.

In a circus act, a 55.5 kg clown with 2.5 m/s horizontal velocity jumps into the air and is caught by a 72.5 kg clown who was initially at rest. The clown is sitting on a sheet of ice, and moves off at some new velocity, after the two clowns are stuck together. How much kinetic energy is lost during this process? Options for answers: 98.2 J 348.6 J 18.9 J 0 J

A 7.17 g pellet is shot horizontally from a BB gun at a speed of 24.8 m/s into a 28.7 g wooden block. The wooden block is attached to a spring and lies on a frictionless table. If the collision is inelastic and the spring constant k = 16.0 N/m, what is the maximum compression of the spring?

A 0.020 kg bullet is shot horizontally and collides with a 2.00 kg block of wood. The bullet embeds in the block and the block slides along a horizontal surface for 1.50 m. If the coefficient of kinetic friction between the block and the surface is 0.400, what was the original speed of the bullet? Include a diagram of the situation.

Two objects are on a collision course. Object #1 has a mass of 4.6 kg and an initial velocity of 7.3 m/s i. Object #2 has a mass of 7.7 kg and an initial velocity of --11.2 m/s i. After colliding, Object #1 has a velocity of -2 m/s i. What is the change in kinetic energy of the system?

A 11 g bullet is fired into the bob of a ballistic pendulum of mass 1.3 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum is 2.3 m. Find the speed of the bullet. m/s еВook

An isolated system consists of two objects, A and B, moving without friction along a horizontal x-axis. The figure shows the initial masses and speeds of these objects. 7.00 m s-¹ 2.00 kg A Check 5.00 m s-¹ Final kinetic energy initial kinetic energy = || 3.00 kg The two objects then suffer an inelastic collision, after which they remain stuck together, traveling as a single composite object, confined to the x-axis. None of these objects rotates. - B What is the difference between the final kinetic energy of the composite object and the total initial kinetic energy of A and B? Give you answer by entering a number, specified to an appropriate number of significant figures, into the empty box. V J.