A 12.0-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. The clay sticks to the block. After impact, the block slides 7.30 m  before coining to rest. If the coefficient of friction between the block and the surface is 0.650, what was the speed of the clay immediately before impact?

A 10-g bullet moving horizontally with a speed of 1.8 km/s strikes and passes through a 5.0-kg block initially at rest on a horizontal frictionless surface. The bullet emerges from the block with a speed of 1.0 km/s. What is the kinetic energy of the block immediately after the bullet emerges? 6.4 J 10 J 5.3 J 8.0 J 09.4J

A 83.2 g marble moving at 10.2 m/s approaches and collides head-on with a stationary 41.8 g marble. Assuming that the collision is elastic, what are the corresponding kinetic energy of each marble?

A 156 g cart moves on a horizontal, frictionlesssurface with a constant speed of 11.1 cm/s.A 60.6 g piece of modeling clay is droppedvertically onto the cart.If the clay sticks to the cart, find the finalspeed of the system.Answer in units of cm/

Mitch throws a 132—gram lump of clay at a 636 g target, which is at rest on a horizontal surface. After impact, the target slides 5.5 m before stopping. If the coefficient of friction is 0.68, find the speed of the clay before impact.

Gayle runs at a speed of 3.65 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 48.0 kg, the sled has a mass of 5.45 kg and her brother has a mass of 30.0 kg. m/s

As it is sliding across ice, an internal explosion breaks an 80 kg object into two pieces. One piece has a mass of 33 kg and moves off with a speed of 15 m/s at an angle of 40° relative to the initial path of the object. If the object was initially moving at 20 m/s. (a) What is the speed and direction of the other piece after the explosion? Be sure to explain how you are able to determine this. (b) Compare the kinetic energy of the single object before the explosion to the total ki- netic energy of the two pieces after the explosion. Explain how this relates to the term 'explosion'.

A 50-g ball is shot into a chamber attached to a 500-g cart.  After the collision the ball/cart combination moves away with a speed of 3.0 m/s.  Assuming that friction and air resistance are negligible, determine the amount of energy lost in the collision.

A 130 lb person sitting in a 150 lb iceboat fires a gun, discharging a 2 oz bullet horizontally. If the bullet speed leaving the gun is 1200 ft/s, what will be the speed of the boat after the bullet is fired, if we assume no friction? The correct answer is 0.54 ft/s

Problem-3: A ball of mass 200 gram strikes a wall perpendicular to its surface at a speed of 10 m/s and rebounds back at the speed of 5 m/s. It is in contact with the wall for 2 milli-sec. Find the average force exerted by the wall on the ball.